Click on a day for specific listings and a related image.

• Article, “The Application of Solubility Measurements to the Study of Complex Protein Solutions and to the Isolation of Individual Proteins.” [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]
• Itinerary: Protein Conference, London [trip cancelled due to passport problems] [Filed under LP Travel: Box #1.001 Folder 1.10]
• LP Biographical Political: Passport Problems, May 1-16: Letter from Ernest Caldecott of the People's Peace Org. RE: "If I were to write a book of a thousand pages, it would all amount to this - I'M FOR YOU!" [Filed under LP Biographical: Box 2.002, Folder 2.7]
• LP Newspaper Clippings: 1952n. Article from the Tallahassee Democrat titled "U.S. Action On Passport Is Protested" tells how thirteen members of Florida State University are protesting LP's denial of a passport.
• Letter from Crellin Pauling to Ava Helen Pauling. [Filed under LP Biographical: Personal & Family; (Family Correspondence: Edward Crellin Pauling, 1930-1995, No Date.), Box 5.048, Folder 48.3]

  Fri.

  Dear Mamma,

  How are you. I am ok. We just played Culter. Score: Chadwick 50, Culter 7. I am going to make a box in shop for the purpose of hiding things from Minni. I am going to put a lock on it. How is the Daddy? The letter I write Sat. nite will mail the envelope with the letter I write Sun. nite because they would not leave till Mon. anyway. I got your letter from the Ben Franklin today. The boys thought the jokes about football were good. I am feeling lonely. I hope Pete comes to see me Sunday afternoon. You know, I think it could be worked that I come home the weekend when you come home. You know, we do not come home until thanksgiving after next weekend home, which is two weekends away.

  Gotta go.

  Love,

  Crelly

  XXXXXXX OOOOOOOO

  Wed. Nite

  Dear Mom:

  I thought I would write to save the expense of a telephone call. Marais and Miranda are coming here on Wednesday, May 21, at 8:15 P.M. The price will be $2.50 for adults and $1.00 for children. I will telephone on Monday the 19^th or Tuesday the 20^th to find out if you come. If you do, I will send all my junk home with you. Don't forget to get the tickets to A) "Call Me Madame" and "South Pacific." When I telephoned hier soir I meant to tell you but I forgot. The trip la bateau will proceed as planned. Today in seamanship we mapped out the course and made up the schedule. I can hardly wait! My woman [situation] is as bad as ever. The other S.O.B. likes her again and is trying to corrupt me [against] her. He goes so far as to claim that she is not a virgin, but not by him. Such people should see a psychiatrist. The chances are damn near nil that he is right, and he is stupid enough to think I believe him. I guess that I shouldn't go rambling on about this.

  Yesterday we won the championship of our league in baseball. Friday we play a game to decide the championship of the C.I.F. a large S. Calif. league. Well, Sleep calls.

  Love,

  Crellie

  XXXXXXOOOOOOOO

• Letter from LP to T. Rogers, Director, Fundamental Research Centre, RE: LP’s cancelled trip to England [Letter from Rogers to LP dated April 21, 1952] [Filed under LP Travel: Box #1.001 Folder 1.10]
• Publication, “The Atomic Arrangement and Bonds of the Gold-Silver Ditellurides.” Acta Crystallographica. 5 (May 1952): 375-381. [George Tunell and Linus Pauling] [Filed under LP Reprints: (Publications of Linus Pauling, 1952), Box 1952p, Folder 1952p.7]
• Reprint, “Structure of the Synthetic Polypeptide Poly-γ-methyl-L-glutamate,” Nature. 169 (May 1952): 920. [Harry L. Yakel, Jr., Linus Pauling, and Robert B. Corey] [Filed under LP Reprints: (Publications of Linus Pauling, 1952), Box 1952p, Folder 1952p.11]

• Abstract, “Configurations of Polypeptide Chains in Proteins,” paper for Royal Society Protein Conference. [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.13]
• Abstract, “Fundamental Dimensions of Polypeptide Chains,” paper for Royal Society Protein Conference. [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.12]
• Letter from E. C. Baughan to LP RE: encloses reprints of a paper of his which he says is derived from some of LP's own work. [Note on lower left in pencil "Reprint given to G. Bergman."] [Letter of response from LP to Prof. Baughan May 22, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from Earl J. McGrath, U. S. Commissioner of Education, to the Department Head RE: as part of a nationwide survey by the National Science Foundation, the National Research Council and the National Scientific Register, he requests that they have individual students of Caltech complete a questionnaire form in order to assess the nation's scientific personnel resources. Asks that he answer two questions about the individual students themselves before the questionnaire is distributed [related memo from Dean Eaton to LP May 7, 1952] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from LP to Dr. C.H. Bamford, Courtaulds, Ltd. RE: received Bamford's letter after returning to Pasadena from the east coast. Summarizes the problem with the Department of State and inquires whether Bamford could ask his questions regarding protein structure via mail. [Letter from Bamford to LP April 21, 1952].
• Letter from LP to Dr. T. Rogers, Fundamental Research Centre, London RE: regrets that he will not be able to visit Rogers due to travel problems. [Letter from Rogers to LP May 1, 1952].
• Letter from LP to Prof. L. Nowotny RE: thanks him for sending him a reprint of his article from Naturforshung und Medicin in Deutschland. Says it has been useful in connection with the work that they are carrying out on the structure of intermetallic phases. Goes on to discuss a point of nomenclature that he has issues with in the article. [Letter of response from Prof. Nowotny to LP July 7, 1952] [Filed under N: Correspondence 1952, Box #287, Folder #19]
• Letter from LP to Richard Lippman, M.D. RE: Mentions passport troubles and agrees with Lippman's previous statement that the East seems to have a different academic atmosphere. [In reply to letter from Lippman to LP April 24, 1952]. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].
• Letter from LP to the Editors of Nature magazine: writes that he has recommended to his colleagues Prof. Schomaker and Glauber that they submit their note on "Failure of the Born Approximation in Electron Diffraction" to them for publication in Nature because he feels that the work is of great significance. Goes on to describe the significance of the work. [follow-up letter from LP to the Editors of Nature May 12, 1952].
• Letter from Leon J. Yarrow, Acting Chief of Clearinghouse for Research in Child Life to LP RE: requests a report of research which LP is currently involved in for the publication of a new bulletin which will supercede all of their previous inventories. [includes a carbon copy of part of a letter from LP in response to this request? includes the names of previous reports of research and where they can be found]. [Filed under C: Correspondence 1952, Box #74, Folder #20]
• Manuscript from and by Shou-Shih Yang to LP RE: Thesis Submitted for degree of Doctor of Philosophy with the title "Toxicological Investigations of Ethylenediaminetetraacetic Acid." for the University of Massachusetts, Amherst, Mass. [Filed under unsorted correspondence 1952].
• Newspaper Clippings Not Related to Linus Pauling: National Guardian N.Y. newspaper RE: newspaper reports on the topic of war and peace.

• AHP writes cheque: to: Bennett Travel Agency amount: $30.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Dr. Champing Frothingham amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: The Reporter amount: $2.67 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 1-16: Letter from E.N.C. Andrade of the Royal Society to LP RE: writes of his disappointment that LP's passport was withheld from him. Mentions a certain state of affairs at the Royal Institution that "Ingold" has probably told LP about. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from LP to Dr. Detlev W. Bronk, President of the National Academy of Sciences RE: writes in answer to Dr. Bronk's interest in his difficulties with the Department of State. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from LP to Justice Owen J. Roberts, President of the American Philosophical Society RE: gives Justice Roberts a description of his passport problems in order to straighten out the facts. Hopes to see him at the next American Philosophical Society meeting. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from LP to Lord Rothchild of Trinity College Cambridge RE: reaffirms his inability to travel to England due to the Department of State's refusal of him a passport. Goes on to describe the situation in more detail. Encloses a copy of his statement about the matter as well as a copy of his letter to President Truman and a copy of his statement about his political beliefs. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Western Union International Communications Cablegram from LP to Prof. Kathleen Lonsdale. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]

  To Prof K. Lonsdale

  121 Station Road

  West Drayton, Middlesex

  Regret cannot attend meeting because passport refused. Have Eddie carry on.

  Linus Pauling

• LP Biographical Political: Passport Problems, May 1-16: copy of letter from LP to Dr. E.N.C. Andrade of the Royal Institution of England RE: reaffirms his inability to attend the Friday Evening Discourse on May 16 due to the State Department's refusal to issue him a passport. Encloses a copy of his prepared statement about the matter as well as a copy of his letter to President Truman and a copy of his statement about his political beliefs. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from LP to Prof. W.T. Astbury, F.R.S. of the Department of Biomolecular Structure at the University of Leeds England RE: affirms that he will not be able to participate in the Royal Society discussion on proteins. Encloses a statement that he formulated about his problems with his passport and the State Department. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of note from the Chemistry Dept. of the University of Leeds England to LP RE: writes that they were disturbed that LP was not able to attend their meeting due to passport difficulties. Goes on to discuss the events of the meeting. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter attached to the above letter from J. G. Crowther to the Members of the Executive Council and Delegates to the Eleventh Meeting of the Executive Council and All Affiliated Organizations RE: gives information about the time and place of the next meeting. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from J. G. Crowther, Secretary General of the World Federation of Scientific Workers to LP RE: asks for LP's factual account of what happened involving his being prevented from attending the Royal Society protein discussion on May 1, 1952. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from LP to Prof. E. D. Adrian, President of the Royal Society, England RE: writes about the matter of his passport being denied him and how the press is responding to the situation. Sends a copy of his statement about the ordeal. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to Dr. E.W. Hughes. [Note from Dr. Hughes to LP May 2, 1952, letter of response from Dr. Hughes to LP May 8, 1952] [Filed under LP Correspondence: Box #163, Folder #1].

  May 2, 1952

  Dr. E. W. Hughes

  Chemistry Department

  The University

  Leeds 2, England

  Dear Eddie:

  I am sorry that the decision about my passport was made at such a late date as to make it difficult for me to keep you informed about our arrival or non-arrival.

  I trust that everything went well at the meeting. I felt rather discouraged yesterday, to think that such an interesting discussion was going on only six thousand miles away, that I might have been participating in if someone had made a different decision.

  I enclose a copy of a statement that I prepared for the press, a copy of my letter to President Truman, and a copy of the statement I made under oath last year, so that you will be better able to answer questions, if they are put to you.

  I hope that you will write to me about the conference on proteins. It will be six weeks before Dr. Corey gets back here, and I am afraid that my curiosity needs to be satisfied before then.

  Sincerely yours,

  Linus Pauling:W

  Encls.

• Letter from Mr. Ben May to LP RE: asks for permission from LP to mention at a panel on research in Washington that he will be attending, what LP is trying to do in sickle cell work and why it is important to the government to back up that type of research. [Letter from LP to Mr. Ben May February 20, 1952] [Filed under LP Correspondence: Box #244, Folder #5 (May, Ben)].
• Letter from R. Paris, Chaire de Chimie Minerale, to LP RE: writes that his French translation of their book General Chemistry has been successful. Announces the next edition of a thesis about "Second order transformations in mixed crystals and double salts." Requests LP's comments on the essay on the study carried out by Bernard Cochet-Muchy. [Letter of response from LP to Prof. R. Paris June 11, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Note from Dr. Hughes to LP. [Letter from LP to Dr. Hughes April 22, 1952, letter of response from LP to Dr. Hughes May 2, 1952] [Filed under LP Correspondence: Box #163, Folder #1].

  HUMANISM AND PEACE

  Dear Professor Pauling: We were very much disturbed when you did not appear on flight 510 Tuesday and a short time later when we found your cable at Lonsdale’s we were most unhappy. I phoned Kathleen’s office and she had heard the news from the Royal Society and had also had a call from Bob and was able to give me his address. Although I called all afternoon till 7:30 I did not reach him till Wednesday morning. Although in your letter to me you had said he would read your paper if you could not come, he practically insisted that I do it. In fact he had already arranged it that way with Astbury and the people at the R. S. He and a number of others have said nice things about the result but I really am afraid that it must have been rather flat. The meeting was, in our opinion, (and many of the natives agree) very poorly organized. There was not nearly enough time for the material scheduled and so in the end there were only about fifteen minutes for discussion! As we were scheduled first, the result was that subsequent speakers could, in effect, discuss those two papers and criticize to their heart’s content while we had no time to answer them, as there was no discussion allowed till after the last paper. Three brief unscheduled papers were inserted at the end of the regular program and Edsall was asked to take up the last twenty minutes with a summary which he himself, I think, regarded as quite pointless. In the brief time left it was impossible to do more than emphasize the importance of being precise about proposed structures and to point out that no one else had been so precise as to permit of detailed criticism and this Bob did.

  Our English friends are anxious to raise a row with the State Department although the R. S. itself is perhaps reluctant to become involved. Kathleen says Sir Robert R. is furious and intends as a private Fellow to do something. The Embassy is said to have protested and Joe T. sent back a cable saying a latter is enroute and meantime “keep cool.” Bob and I, not knowing what your wishes are, have been reluctant to urge the local people one way or the other. Ruth and I are enroute back to Leeds to arrival the 4^th. Prof. Clark will lecture there the 5^th and I hope by then he can tell me more. I will write again then. Till then our best wishes and regards.

  Linus Pauling

  LP: fkg

• LP Biographical Political: Passport Problems, May 1-16: Note from Dorothy Hodgkin of the Chemical Crystallography Laboratory of the University Museum of Oxford to LP. [Letter from LP to Mrs. Dorothy Hodgkin April 28, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]

  Dear Linus

  We were all shocked and angry and very sad that you could not come. Is there anything we can do? At the meeting we did not know for certain that you would not be coming till near the end when Adrian arrived since it was reported he was in Washington and trying to extricate you. So the time for immediate protein passed.

  But we missed you a great deal in all the discussion and will do anything we can to make it possible for you to come some other time.

  With all our best wishes, sympathy, & admiration.

  Dorothy Hodgkin

• LP Biographical Political: Passport Problems, May 1-16: Note from Robert B. Corey [Goring Hotel, London S.W.I.] to LP RE: writes in summary about all of the presentations at the Royal Society Meeting on protein structure in England. Says the meeting was not as meaningful without LP there. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from Philip Morrison to LP RE: asks that LP honor Dr. DuBois with a letter for his eighty-fourth birthday. Goes on to discuss DuBois' importance as a leader and a scholar. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from Prof. Charles Goulson, F.R.S. to LP RE: expresses his sadness that LP was unable to attend the King's College Colloquium in England due to the unfortunate passport situation. Sends along a copy of his book on Valence. [Letter of response from LP to Prof. Goulson May 12, 1952, related letter from M. Gilburt, Secretary to LP April 18, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from Ralph Spitzer to LP RE: Invites LP to be a principal speaker at a meeting in Kansas City. Would like LP and AHP to stay with them. Asks if LP knows of any teaching jobs in chemistry for two friends of his. [Reply from LP to Ralph Spitzer May 5, 1952]
• Note from Dr. Corey to LP RE: writes a detailed note describing the events of the Royal Society meeting on Protein structure that LP missed due to passport issues. [Filed under LP Correspondence: Box #67, Folder #5].

• Pauling Scrapbook: The Sunday Oregonian Magazine (Portland) article entitled "Linda Pauling" RE: features Linda Pauling and what she is up to at Reed College. [two pictures included in article]. [Filed under LP Biographical: Box 6.006, Folder 6.21]

• 144-page collection of articles entitled Proceedings of the Second National Air Pollution Symposium. [Note: this was a two day event, taking place on May 5 and May 6, 1952] [Filed under LP Science: Box 10.007, Folder 7.2]
• AHP writes cheque: to: A.A.U.N. Pasadena amount: $3.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Adohr Milk Farms Inc. amount: $7.20 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Athenaeum amount: $22.45 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Chadwick School amount: $2.50 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Liebergs amount: $15.29 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Mira Loma Mutual Water Co. amount: $3.23 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: National Sharecroppers Foundation, Inc. amount: $5.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Pacific T. and T. amount: $15.33 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Pasadena Star News amount: $3.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Richfield Oil Corporation amount: $13.17 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Southern California Edison Company amount: $26.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Standard Oil Co. of California amount: $9.56 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Swimming Pool Maintenance amount: $25.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: The Apothecary Shop amount: $15.37 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Union Oil Co. of California amount: $4.25 [Filed under LP Biographical: Box #4.021, Folder #3]
• Handwritten letter from Kay Fujino to AHP RE: Invites AHP to the garden that has been long worked on. [Filed under AHP General Correspondence, Personal: E-H: Box #1.001, Folder #1.2]
• LP Biographical Political: Passport Problems, May 1-16: copy of a statement from the National Committee to Repeal the McCarran Act as well as an open letter to Congressional Candidates RE: implore the Candidates to declare publicly their position with regard to the McCarran Act (Internal Security Act of 1950). [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of an editorial from Robert Robinson to the Editor of the Times RE: the disappointment of the Royal Society that LP was denied a passport by the U.S. government to travel to England for scientific purposes. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from LP to Dr. V. F. Weisskopf of the Dept. of Physics MIT RE: writes in response to their letter requesting information about his passport issue. Goes on to discuss the matter in great detail. Encloses a copy of a statement that he prepared on the matter as well as of his letter to President Truman, his statement about his political beliefs and his April 12, 1952 and April 14, 1952 letters to Mrs. Shipley of the State Dept. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from LP to Sir Lawrence Bragg of Cavendish Laboratory, England, RE: writes in apology that he was unable to attend the Royal Society discussion meeting on proteins. Sends copies of documents that "bear on the matter of the refusal of [his] passport" in order to prove that he made his best effort to come to the meeting. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from Esther Simpson of the Society for Visiting Scientists to LP RE: writes that all were disappointed by LP's non-arrival for the Royal Society meeting in England due to passport problems. Mentions an article about it was recently published in the Times. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from R. B. Shipley Chief of the Passport Division of the Department of State to LP RE: sends LP back the $9.00 that he submitted in connection with the reconsideration of his passport application. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from W.L.Bragg of Cavendish Laboratory, Cambridge, to LP RE: writes that he was sorry that LP couldn't attend the Royal Society meeting. Goes on to discuss LP's model of the alpha helix. Wished to show LP some of his own work on living muscle. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: note from Prof. Sir Robert Robinson to LP RE: writes that he published a mild protest in the Times against the U.S. State Dept.'s refusal of a passport to LP that disabled him from participating in the Royal Society meeting in England. Mentions that the Solvay conference of 1953 will be on proteins as well. [Letter of response from LP to Sir Robinson May 12, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to Dr. Ralph Spitzer RE: Thanks Ralph for inviting him to give a talk at a meeting. However, LP cannot accept the invitation due to conflicts. Attached is a list of openings in chemistry for Dr. Spitzer's friends to look into. [Letter from Dr. Spitzer to LP May 3, 1952]
• Letter from W.L. Bragg.

  Cavendish Laboratory, Cambridge.

  5th May 1952

  Dear Pauling,

  We are all very sorry indeed that you could not come to the Royal Society discussion, and in fact the meeting we all felt lost most of its point because you were not there. We also looked forward so much to your visit to Cambridge.

  There was much discussion about your model of the α helix; a number of people are still doubtful about it and you ought to have been there to answer their questions personally. I am convinced of its essential correctness. It may be twisted or untwisted a bit from the exact form you propose, but that is merely a minor detail. It seemed to me that the existence of something very like it in the artificial polypeptides, at any rate, is very strongly confirmed.

  Perutz and I have been making a frontal attack on the structure of the helioglobln molecule. I am no biochemist and have felt my best contribution is to see what one can deduce purely by X-Ray Analysis without making any assumptions about the structure of the molecule. We are not there yet, but I think we have got a long way. In the (hol) projection which is centrosymmetrical the different shrinkage forms enable one to plot many values of F(hol) along the h = constant layer lines. We have so many points that we are able to establish the nodes and loops along these layer lines and of course we know they alternate + and - in sign. If we can take the further step of relating the signs of each layer line to the next we can then make a Fourier picture of the crystal. We have not made this further step yet but have hopes of doing so. We can already relate layers one and two to the central layer and are working hard to do the rest.

  We have some interesting work on living muscle also which I should have enjoyed showing you. This is being done by young Huxley who is coming to MIT as a Commonwealth Fellow in September 1952.

  We shall look forward to having your son here, you must try and pay another visit while he is here.

  With warm regards,

  Yours sincerely,

  Professor L. Pauling

  California Institute of Technology, Pasadena 4

• Letter to Sir L. Bragg RE: Sends some proof in the form of documents that he was unable to attend the Royal Society discussion on proteins because he was refused a passport. Suggests meeting the following year to discuss the problem of the structure of proteins.

• AHP writes cheque: to: Sue Perry amount: $20.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from Prof. AR Todd of the University Chemical Laboratory to LP RE: writes in response to LP's letter of April 28, 1952. He is disappointed that LP was unable to travel to England due to passport difficulties. Mentions Robinson's letter in the Times about LP's passport issues. Mentions his own job and current work. [Letter of response from LP May 12, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from Victor Rothschild to LP RE: writes that he is sorry LP was not able to stay with him in Cambridge (England). [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from Harry Grundfost, Chairman of the New York Branch of the American Association of Scientific Workers to LP RE: copy of a letter to Pres. Truman on the subject of Bacteriological Warfare. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to Dr. John F. Tinker. [Filed under LP Correspondence: Box #410, Folder #17]

  May 6, 1952

  Dr. John F. Tinker

  Department of Chemistry

  Harvard University

  12 Oxford Street

  Cambridge 38, Massachusetts

  Dear Dr. Tinker:

  I thank you for sending me a copy of your letter to Mr. Ronwin, about his paper on the structure of nucleic acid and the note that Professor Schomaker and I have published on the subject.

  First, let me say that it is not a "detail" that we found defective in Ronwin's proposal. The element of novelty in his structure is the five oxygen atoms around a phosphorus atom. We mentioned that there is very strong evidence that structures of this sort are not stable. This is a fundamental criticism rather than criticism of a detail.

  Our criticism might have been much more extensive. For example, it is possible to show by consideration of bond energies that the proposed structure is seriously unstable. We refrained from including this consideration, and others bearing on the question, because we thought our note might as well be as short as possible, compatible with our goal - which was to prevent biochemists from wasting time and effort on a proposal not deserving of this time and effort.

  In this connection I may mention that Ronwin has found in the literature a description of the synthesis of four substances that seen to involve five oxygen atoms about a phosphorus a atom - an example is penta-phenolorthophosphate, P(OC₆H₅)₅. These substances are extremely unstable, being decomposed rapidly by moisture. This property of extreme instability in the presence of moisture is, of course, just the property that would make Romwin's proposed structure for the nucleic acids inacceptable, unless, as we stated in our note, there is an overwhelming necessity for the proposal - such necessity as to require one to assume a great difference in stability from related substances.

  Professor Schomaker and I, like other workers in the field of molecular structure, know how easy it is to postulate hypothetical structures for substances. It is so easy to do this that no reputable worker in

  Dr. Tinker -2- 5/6/52

  the field of molecular structure publishes descriptions of hypothetical structures unless he has significant evidence in support of the structures. There is no strong evidence in favor of Ronwin's hypothetical structure, as compared with other hypothetical structures such as the one you mention in your letter.

  I do not think that you are right in saying that Professor Schomaker and I criticize novelty. What we are criticizing is foolish-ness - the irresponsible publication of unsupported hypotheses. I may mention to you that some months ago I talked for several hours with Mr. Ronwin about some other ideas of his about molecular structure, and found that he has little knowledge of the precise information that has been gathered about the structure of molecules during the last twenty-five years.

  In the fourth paragraph of your letter you say that perhaps I am annoyed at my own error, on page 109 of The Nature of the Chemical Bond. There is no error on this page of The Nature of the Chemical Bond. The structures of the compounds of phospherous described on this page are correct.

  Sincerely yours,

  Linus Pauling:W

• Letter from LP to Dr. Rossini RE: Writes that he approves the proposals regarding the number of molecules in a chemist's mole, as stated in the April 17, 1952 letter. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from LP to Mr. Ben May RE: is glad that his work will be mentioned by Mr. May at a research panel in Washington, hopes to also see Mr. May there as he will also be attending a panel on research of the Presidential Commission on Health Needs. Encloses a paper on the hemoglobin molecule in health and disease and a copy of a pamphlet on a proposed program of research on fundamental problems of biology and medicine. [Letter from Mr. Ben May to LP May 2, 1952, letter from Mr. May to LP September 17, 1952] [Filed under LP Correspondence: Box #244, Folder #5 (May, Ben)].
• Letter from LP to Mr. George Green RE: writes to give congratulations for his election as Comptroller of the Institute. Looks forward to their working closer together in the future. [Filed under G: Correspondence 1952, Box #140, Folder #16]
• Letter from LP to Mr. Nash RE: congratulates him on his election as Secretary of the Institute. [Filed under N: Correspondence 1952, Box #287, Folder #19]
• Letter from LP to his sister, Lucille Jenkins RE: Gives Lucille information on new drugs effective against epilepsy, which he encourages her to show her doctor. Informs Lucille that he has been appointed to a panel of the Presidential Committee on Health Needs.
• Letter from Prof. Professor Alexander Todd, University of Cambridge to LP. [Letter from LP to Prof. A. Todd April 22, 1952, letter from LP to Prof. Todd May 12, 1952] [Filed under LP Correspondence: Box #407, Folder #6]

  ART/JB 6th May, 1952.

  Professor Linus Pauling,

  California Institute of Technology,

  Pasadena 4,

  California,

  U.S.A.

  Dear Linus,

  I was very much upset to receive your letter of 28th April on my return from a brief lecture visit to Holland. I need hardly say that Alison and I are extremely disappointed that you and Helen are not going to be with us this month. In particular we are very angry indeed at the reason for your staying at home. I do not know whether you have yet seen it or not, but Robinson had a letter in the "Times" yesterday about it in which he stated in quite forthright terms what he thought about the action of your State Department, and I heartily agree with him. Indeed, if he had not written I was proposing to do something about it myself. There is, I suppose, nothing we can do about it at the present time, but the whole thing is so silly.

  Thank you for your congratulations - I am not at all sure that commiserations are not more appropriate, but I am hoping that it will work out reasonably well. I think the demands on my time can be kept within bounds, and if they cannot then I shall simply resign, because I do not want to have my ordinary scientific work crippled by outside work of this type. Actually it probably sounds worse than it is because, of course, I am not doing it on a whole time basis like Tizard, and it is much more like the Chairmanship of an ordinary Government Committee than the kind of thing which, for example, Joe Koepfli is doing in Washington.

  Our work here goes well, and I hope we may have an opportunity some time soon of discussing things, especially if as I hope you are getting interested in the macromolecular structure of the nucleic acids.

  With best regards,

  Yours sincerely,

  Alex

• Letter from T. Weiner to LP asking for his advice on the theoretical aspects of his recent experiment. He also mentions that he has received comments from Einstein, but would also like to hear from LP. [follow up to May 6, 1952]
• Letter from T. Weiner to LP explaining the work he is doing with photon energy passing through matter. [follow up May 7, 1952, LP's reply, May 21, 1951]

• Baggage claim check: United Air Lines, Los Angeles [Filed under LP Travel: Box #1.001 Folder 1.10]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from Max F. Perutz of Cavendish Laboratory to LP RE: writes that he was disappointed that LP was unable to attend the Royal Society Meeting due to passport issues. Mentions the objections to the alpha helix given by the Astburites and the Courtauld people. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from Prof. W.T. Astbury to LP RE: expresses regret that LP was unable to make it to the Royal Society Meeting. Reports on the outcome of the meeting. Is working on collecting all the MS for publication in the Proceedings. [Letter of response from LP to Prof. W. T. Astbury May 14, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from A. O. Rankine, Secretary of the Royal Institution to LP RE: statement informing attendants of the meeting of the change in lecture arrangements from LP's discourse to one given by J.S. Hales. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from E. DeRobertis of the Instituto de Investigacion de Ciencias Biologicas to LP RE: Inquires as to whether Caltech can host his collaborator, Mr. C.M. Franchi, in his pursuit to learn the techniques and problems of x-ray diffraction. Explains that he has just been awarded a fellowship and therefore it is essential that he study these things during the academic year beginning July 1, 1952. [Letter of response from LP to Dr. E DeRobertis May 28, 1952] [Filed under F: Correspondence 1952, Box #128, Folder #17]
• Letter from George Glockler to LP RE: thanks LP for helping him in the matter of his friend's son, Howard Berg, in his quest for the appropriate college career. [Filed under LP Correspondence: Box #136, Folder #15 (Glockler, George)].
• Letter from LP to Dr. Federico A. Lehmann RE: Writes that he is pleased that they are making some preparations of Oxypolygelatin. Offers to answer any of their questions and to check any of their preparations. [Note from Dr. Lehmann to LP April 24, 1952] [Filed under L: Correspondence 1952, Box #230, Folder #18]
• Letter from LP to Dr. Lars Gunnar Sillen RE: in response to Dr. Sillen's letter of enquiry, LP lets him know that the new edition of his General Chemistry book is scheduled to come out by June of 1953. [Letter from Dr. Sillen to LP April 25, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from T. Weiner to LP explaining a correction to his letter May 6, 1952 about the shift of the diffraction pattern due to a magnetic field. [follow up to May 6, 1952]
• Letter to Mr. Bennett [does not indicate sender], RE: Sender returns LP and AHP's BOAC tickets to London and back, as they were unable to go abroad. Asks Bennett to refund them $1236.40, as well as cancel the return June 8 reservation [math calculations figuring out refund amount in pencil at top of page] [tickets were enclosed].
• Memo from Dean Eaton to LP RE: writes that Dr. DuBridge has requested that he distribute the enclosed questionnaire to be executed by seniors in LP's division. Gives LP a list of the seniors in LP's division. Includes their names and ranks in the class. [related letter from Earl J. McGrath to Department Head May 1, 1952].
• Memo from LP to Ray Owen RE: writes that he has telephoned Prof. George Glockler after talking with him, and has told him that Howard Burg ranked high among the applicants for admission as freshman and that he would get a scholarship. [Filed under O: Correspondence 1952, Box #300, Folder #14]
• Memo: cancelling airline reservations for April 28 and June 8 [Filed under LP Travel: Box #1.001 Folder 1.10]
• Newspaper Clippings Not Related to Linus Pauling: Clipping from New York Times entitled "Death of a Scientist" RE: accuses famous scientist Frederic Joliot-Curie of being a "Stalinist hack" and of dying, in his mind, as a scientist for various reasons.
• Note from Mr. William F. Sheehan, Jr. to LP RE: requests that LP review his thesis from 1951, as the deadline for submission of 1952 is imminent and he wishes to make changes as soon as possible. [Letter of response from LP to Mr. Sheehan May 12, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Note saying that the April 23, 1952 letter from Dr. McKenzie about the approval of a contract renewal has been sent on to Holmes Sturdivant. [Filed under LP Science: Box 14.031, Folder 31.2]

• AHP writes cheque: to: Manor Market amount: $25.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• After a discussion with Schomaker, LP writes a manuscript about pi-bond orbitals. [Filed under LP Science: Box 3.005, Folder 5.40].
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from "Eddie" of the Chem. Dept. at the University of Leeds, to LP RE: in recognition that LP was not able to attend the Royal Society meeting due to passport difficulties, "Eddie" writes a long summary of his work with proteins and what was discussed at the meeting. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from Bern Dibner, President, Burndy Engineering Company to LP RE: Congratulates LP for the American Philosophical Society Meeting that took place in Philadelphia. Enclosed is a New York Times clipping of interest. [Reply from LP to Dibner May 14, 1952]. [Filed under LP Science: Box 14.011, Folder 11.2].
• Letter from Dr. E.W. Hughes to LP. [Letter from LP to Dr. Hughes May 2, 1952] [Filed under LP Correspondence: Box #163, Folder #1].

  THE UNIVERSITY

  LEEDS 2

  Dear Professor Pauling:

  Since returning to Leeds I have received your letter from New York including the copy sent care of Kathleen. I am sorry the time for discussion was so restricted, for there were many things that could have been said if there had been time. Bob took notes on all the papers and will no doubt report them to you. I will at this time only mention the synthetic polypeptide work, as it is nearer to my own line of work. Except that I will say that the papers presented by Bragg and Perutz were substantially what they told me at Edinburgh a month ago and already sent to you in my letter last month. They have now fixed the sign choice for two of the seven layers so there are only five left before they can prepare a Fourier projection. I will also add that Astbury and his people are saying that everyone familiar with the field is sure that the 5.1 Å reflection of alpha keratin is a true meridional spot and not a doublet- and that they doubt if the Lotmar-Picken material is alpha keratin or even a protein. They express the same doubt over the fibrin for which they sent you pictures. These are matters that can be settled only by more experiments.

  Bamford and Co. restated their criticisms of the March 1 Nature paper with the new point that they now believe their pictures are best fitted by a cell with co = 43.2 Å. This makes the old 5th layer now the 8th and all layers are given new indices which are the closest possible to 8/5 times the old indices. They also state that there are definitely weak spots, four of them, not indexed by this cell and not compatible with hexagonal packing. There is also a streak which, if part of the alpha patter, will require doubling co to give 86.4 Å. They give the Perutz spacing as 1.50 and their value for the old co was 27.0. These are notably larger than Yakel’s values. Their pictures were made in a vacuum camera with monochromatized rays and silver was plated on the sample to give the silver pattern for calibration purposes. As I do not know what precautions Harry took with regard to calibration and film shrinkage I do not know what to say about these discrepancies. But I do note that harry said to me in a letter several months ago that there were some spots that didn’t seem to fit the cell. I discussed their remarks about the infrared results in my letter last month. These same remarks were made in part by some Englishman, whose name I didn’t catch, immediately after Bob’s brief rebuttal but when I wanted to amplify them Adrian turned the meeting over to Edsall for the final summary.

  Since then I have considered the new indexing. It corresponds to twenty-nine residues in eight turns. Upon applying the Cochrane-Vand formula one finds that for the layer lines observed the Bessel function orders are exactly those found for the old indexing while for the missing layers the orders are equal to or greater than those for the old indexing. A twenty-nine residue helix can’t have hexagonal symmetry. The cell might be orthorhombic with axial ratios almost exactly corresponding to hexagonal packing but with the C centering not exactly obeyed. The strong spots would then have spacings fitting a hexagonal cell but there could be some weak ones not permitted by a hexagonal cell. If at the same time the over all scale is nearer to Harry’s determination than to theirs, the density would fit and there is no argument against the alpha helix.

  Checking over the above calculations suggested another interesting point to me. Yesterday I calculated the Fourier transform of a spiral of atoms with no true repeat. I assumed a fixed pitch p per atom and P per turn and assumed a large number of turns. By this time I was not surprised to find that

  Even with no repeat a helix gives discrete layer lines. But in general there is no constant single layerline spacing. The structure factor equation (per atom) is like that given by Cochrane with the conditional equation being

  P(ζ - k/P ) = m

  where m is any integer, k is the order of the Bessel function involved and ζ is the reciprocal lattice coordinate parallel to the axis. This rearranges to

  ζ = m/p + k/P

  Thus for Bessel functions of a given order there is a system of layer lines with separation l/p . But with m constant one gets a system with separation l/P on which the Bessel function order increases by one between layer lines. If p and P have a l. c. m. c such that c = ap = bP with a and b integers, then

  ζ = ma/c + kb/c = l/c,

  which is the case for a true repeat co , l being the layer line index. This is the case discussed by Cochrane.

  If one knows approximate values for p and P one can from the observed ζ values find the m and k values for each observed layer, making use of the fact pointed out by Cochrane that the order k must be low. One can then carry out at least squares determination of p and P . Bamford’s data in Nature are given as spacings rather than as layer line separations. I have converted them to ζ values using a slightly smaller value of ao than they give, a change suggested by the agreement between calculated and observed values on the equator. They give no numerical data at all for two very weak layers. From an analysis as outlined above I get p = 1.499 and P = 5.42 . . I suggest that such a calculation should be made for Harry’s data after the calibration has been checked if that appears necessary.

  I believe it was Dorothy Crowfoot who mentioned to me at Oxford in February that rotation pictures about a certain axis of a certain protein- I think she said Bernal’s ribonuclease- has this characteristic appearance. She asked at that time what it might mean. From the above it appears that it might mean there are spirals parallel to the axis with P much larger than p so that as you go up the layer line series the Bessel function order increases regularly and one must go farther and farther from the meridian to find spots.

  I am still thinking about all this and may send a note to Nature.

  We are expecting Bijvoet here next week and Kratky near the end of the month. The Corey’s will arrive about the time Bijvoet leaves. They are driving a rented car and left London yesterday for Oxford and Cambridge.

  I suppose you will have heard of the letter Sir Robert Robinson wrote to the Times Monday. People here are generally baffled or angry or both about the State Department’s action. Kathleen told me that one of her colleagues said that any day now he would expect a modern Mayflower bringing back persecuted Americans to England. He overlooked the fact that modern Mayflowers require passports. If you are planning to take any action involving legal or other expense I would be glad to send a check to help and will do anything else I can to be of assistance.

  With regard to my appointment- if I understand the implications I think we would rather stay on the nine month basis. All of our relatives are either in the Eastern United States or in Europe. We would therefore like to be free to leave about one summer in three to come over here. These visits would be arranged at the times of the International Union Congresses or some other equally important scientific meeting but would still be primarily visiting. Otherwise we would remain in Pasadena most of the summer-so what we need is to alternate, two years on full time basis and one year on nine months basis but that of course is too fancy an arrangement. We do not think at the moment that we need the extra money and would rather feel free to be away, as outlined above, if you do not think it contrary to the good of the Division.

  Best wishes and regards to you and Mrs. Pauling.

  Sincerely,

  P. S.

  I wish also to raise a question regarding Figure 3 of your MS and the statement on page 9 that Harry has calculated the intensities for the fifth layer. The only reference is to the published work of Cochrane Crick and Vand which I have not seen (i.e., their forthcoming Acta paper. I do not know what they give but the full structure factor for one residue is given by

  [lengthy handwritten equation]

  where ξ, ζ, α are reciprocal space cylindrical coordinates, rj, xj and βj are the cylindrical coordinates of the jth atom of the residue relative to some origin in the helix, k is the order of Bessel function and the equation given above relates ζ , k, p, P and the arbitrary integer m. Now to get a proper Figure 3 one would split this structure factor equation into real and imaginary parts, sum over the j’s with appropriate coordinates for each atom, square and add the two squares and then average over alpha. As nearly as I can tell Figure 3 was actually computed for just one atom and accordingly represents only approximately and only near the meridian the places where the intensity can be large and in particular where it must be zero. Because of the Bessel function argument I feel that Figure 3 is useful only at small values of the argument and then only for showing where the intensity must be zero. I also wonder if Harry went through this full complicated process, taking into account also the position of the helix in the cell?

• Letter from F. C. Lindvall to LP RE: writes about a meeting on May 14 in which to discuss informally the research that he has been doing on problems of metals and alloys so the Engineering Division and the Chemistry division can combine their interests. [Filed under: LP Biographical, Box 1.018, Folder 18.2] [Also filed under L: Correspondence 1952, Box #230, Folder #18]
• Letter from F. C. Lindvall to the Committee on Graduate Study RE: Lindvall proposes a Ph.D. degree option in Engineering Science.

• AHP writes cheque: to: Manor Market amount: $25.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 1-16: Statement for release from the American Peace Crusade on the barring from Canada of Dr. W.E.B. DuBois, Co-Chairman of the American Peace Crusade. Statement by Dr. W.E.B. DuBois. Letter to Harry S. Truman on the matter of bacteriological warfare by the United States Forces in Korea. [copies]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from Victor Rothschild of Merton Hall, Cambridge to LP RE: was sorry that LP would not be able to stay with them in Cambridge due to passport difficulties. Hopes to see LP at Caltech in the next year. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from Arthur M. Churchill, Chairman Parents' Committee of Reed College RE: writes that he sends a copy of the letter by the Parents' Committee and a reprint from the New Your Herald Tribune, praising Reed's educational program. Hopes LP will be able to continue serving on the sponsoring committee. [a copy of a letter to be sent out by the Parents' Committee of Reed college included] [Note in pen at top: "Include $50 for our pledge (income tax free)."] [Letter of response from LP to Mr. Churchill May 29, 1952].
• Letter from Dr. Edward Wichers to Dr. Rossini [copy in LP's files] RE: Informs Dr. Rossini that he favors the adoption of a defined ration between the physicists and chemist's mole. Is not prepared to recommend adopting the specified factor without further consideration. Does not agree that the factor should be based on the isotopic composition of atmospheric oxygen. Says he will follow up with more comments. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from Dr. Richard Lippman to LP RE: Upon arriving back in Los Angeles from the East coast, Lippman discovered that all of his research funds had been cancelled due to the actions of the Cedars of Lebanon Hospital. This action will greatly affect the collaborative research being done by him and other Caltech faculty. [Related letter from LP to Lippman May 1, 1952]. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].
• Letter from H. Harry Szmant to LP RE: tells LP that he delayed responding to his reply while he waited for more information on the subject of the electronic structure of sulfones. Now sends reprints of one paper and a copy of the discussion of other paper. Goes on to discuss the paper and invites LP to criticize the ideas in it as well. [reprint and copy of discussion of paper dealing with the cryoscopic behavior of sulfones included with letter] [Letter of response from LP to Dr. H. Harry Szmant May 16, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Prof. F. J. Toole RE: in response to Prof. Toole's letter, writes that he is glad to hear that Wiesner was awarded a Guggenheim Fellowship. Brings up his passport problems with the U.S. Dept. of State which prevented him from traveling in Europe. Goes on to discuss what LP Junior is doing. [Note from Prof. F. J. Toole to LP April 24, 1952, note from Prof. F. J. Toole to LP July 2, 1952] [Filed under LP Correspondence: Box #407, Folder #8].
• Letter from LP to Prof. Haakon Haraldsen RE: was glad to get Prof. Haraldsen's letter. Tells the story of the Department of State's refusal to give him a passport to travel to England. [Filed under H Correspondence: 1952, Box #166, Folder #3]
• Memo from G. W. Green to LP RE: Informs LP that the ONR would only be able to fund them for $24,210, which was $5,790 less than expected. This amount represents the deletion of the Weissenberg goniometer. [Filed under LP Science: Box 14.031, Folder 31.2]

• AHP writes cheque: to: Walter Fritts amount: $40.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 1-16: letter from Dr. E.N.C. Andrade of the Royal Institution to LP RE: thanks LP for his letter and enclosures on the subject of his passport issues. Mentions Sir Robert Robinson's letter to the Times. [Filed under LP Biographical: Box 2.002, Folder 2.7]
• LP Newspaper Clippings: 1952n. Article from the C. S. Monitor titled "Please Give Some Facts," discusses Communist charges that the U.S. was using germ warfare against the Chinese.

• LP Biographical Political: Passport Problems, May 1-16: typed notes entitled "Statements made to Reporter from Los Angeles Examiner, 10 A.M., Sunday, May 11, 1952 Linus Pauling." Regarding LP's passport situation. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Newspaper Clippings: 1952n. Article in the Pasadena Independent "Deny Pauling a Passport, Says Report" discusses Pauling's recent issues trying to obtain a passport.
• LP Research notes trying to account for bond lengths in meridional reflections in collagen. [Filed under LP Science: Box 6.004, Folder 4.6]
• Letter from Irvine Page to LP, RE: Page was delighted to talk to LP on the telephone and is pleased that he will come to Cleveland and talk on Biological Specificity and Molecular Structure of Proteins on May 28th and 29th. Page hopes that LP may have some reprints that he would be willing to send to the Research Division before his talk. [LP’s reply May 12, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.8]
• Pauling Scrapbook: Pasadena (CA) Independent article entitled "Deny Pauling a Passport. Says Report." RE: indicates that LP has recently been denied a passport to travel abroad. Goes on to report the opinion of the House Un-American Activities Committee. [Filed under LP Biographical: Box 6.006, Folder 6.24]

• LP Biographical Political: Passport Problems, May 1-16: Letter from Anne Walters of the Huntington Hartford Foundation to LP RE: writes in approval of LP speaking out against the attack made on his personal integrity due to the State Dept. denial of him a passport. Hopes to hear about further action being taken in LP's support. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Notes by LP RE: Interview recorded by Mr. Kennealey 10 to 11 AM Mon, May 12, 1952 including 5 questions for LP in regards to his attempt to obtain a passport from the State Dept. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Several copies of a letter from LP to Senator Paul H. Douglas RE: writes to inform Senator Douglas about his recent passport difficulties involving the State Dept. Sends copies of a statement in response to the matter, of a political statement made the year before, and of a letter to President Truman. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from LP to Professor A.R. Todd, FRS of the University Chemical Laboratory RE: writes in response to Prof. Todd's letter of May 6, 1952. Mentions his disappointment in not being able to travel to England due to passport problems and goes on to discuss scientific matters relating to his work on proteins. Encloses some copies of additional letters and statements. [Letter from Prof. Todd to LP May 6, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from LP to Prof. Sir Robert Robinson of The Dyson Perrins Laboratory RE: thanks him for writing a letter to the Times about LP's inability to attend the Royal Society discussion meeting. Goes on to discuss his work on proteins. Also expresses enthusiasm to learn that the Solvay Conference for 1953 will be on proteins. [Note from Sir Robinson to LP May 5, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from LP to Professor Charles Goulson, F.R.S. of King's College, Strand, London RE: thanks him for the letter and goes on to describe his passport ordeal in relation to his not being able to speak at the King's College colloquium. Mentions his work on orbitals for multiple bonds. [Letter from Prof. Goulson to LP May 3, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from [illegible signature] to Dr. Lee A. DuBridge [cc: LP] RE: applauds Dr. DuBridge for standing up for LP in a Los Angeles Times article. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Newspaper Clippings: 1952n. Article from LA Examiner titled "Pauling Raps Passport Ban: Caltech Man Denounces U.S. Refusal of Trip to London." [photo of LP with protein model]
• LP Newspaper Clippings: 1952n. Article from Los Angeles Herald & Express titled "Prof. Pauling Hits State Dept. Ban On England Visa."
• LP Newspaper Clippings: 1952n. Article from Pasadena Star-News titled "Plans No Appeal For Passport: But Pauling Repeats Denial He's Communist" discusses LP's denial of a passport to go to England for a Royal Chemical Society conference on protein structures. Many quotes by LP.
• LP Newspaper Clippings: 1952n. Article from The Los Angeles Daily News titled "Caltech scientist refused passport; raps State Dept." addresses LP's refusal of a passport for a trip to England for the Royal Chemical Society conference on protein structures.
• LP Newspaper Clippings: 1952n. Article from The Los Angeles Times titled "Dr. Pauling Denied Passport by U.S.: Suspicions of Communist Ties Cause Ban on Travel Permit, Caltech Chemist Says."
• LP Newspaper Clippings: 1952n. Article from The Los Angeles Times-Mirror titled "Famed Caltech Chemist Denied Passport As Communist Suspect" discusses LP's denial of a passport for his trip to England for a conference held by the Royal Chemical Society.
• LP Newspaper Clippings: 1952n. Article from The New York Times titled "Passport is Denied to Dr. Linus Pauling; Scientist Assails Action as 'Interference'."
• Letter from Carl Niemann to Prof. Weldon G. Brown, cc: LP RE: "May 15 satisfactory, suggest travel by air..." [Note in pencil on lower right, "May 19, 2 weeks."] [original letter from Prof. Brown to Carl Niemann April 30, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from Edward C. Reifenstein, Jr. of Conferences on Metabolic Interrelations to LP RE: requests permission to reprint figures from one of LP's papers for use in their publication entitled "Transactions" of the Fourth Conference on Metabolic Interrelations, 1952. [Letter of response from LP to Dr. Reifenstein, Jr. May 20, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Irvine H. Page, Cleveland Clinic, RE: Would like to give a speech as requested on May 29, 1952. Goes on to give specifics regarding his travel plans. [Filed under LP Speeches: 1952s.8].
• Letter from LP to Irvine Page, RE: LP is pleased to be coming to speak in Cleveland at the end of May. LP notes that his two talks on the Biological Specificity of Proteins and the Molecular Structure of Proteins are related, but yet are different enough to be two independent lectures. [Page’s letter May 11, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.8]
• Letter from LP to Mr. William F. Sheehan, Jr. RE: in response to Mr. Sheehan's note, LP advises that he not make any additional changes to his thesis on valence-state energies and dissociation limits. Goes on to discuss the work of Prof. Schomaker concerning the anomalous phase shift on scattering of electron waves by heavy atoms. [Note from Mr. Sheehan to LP May 7, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Prof. Professor Alexander Todd, University of Cambridge. [Letter from LP to Prof. A. Todd May 6, 1952, letter from Prof. Todd to LP February 10, 1953] [Filed under LP Correspondence: Box #407, Folder #6]

  May 12, 1952

  Professor A. R. Todd, F.R.S.

  University Chemical Laboratory

  Pembroke Street

  Cambridge, England

  Dear Alex:

  I am glad to have your letter of 6th May. Ava Helen and I are still feeling very disappointed that we could not have our visit in England. I must say that I am astounded that the State Department should have refused me a passport, after I had pointed out clearly that the visit to England was to be purely for scientific purposes - especially since the principal reason for the trip was to take part in the Royal Society discussion meeting. We hope that the present situation will not continue into the future, and that we shall be able at some future time to visit you.

  I am pleased to have you say that you will not allow your new government job to cripple your scientific work (I do not think that you should call it your ordinary scientific work - it seems to me to be extraordinary).

  We are only rather slowly beginning work in the field of nucleic adds and nucleoproteins, but I hope that in another year or two the work on ordinary proteins will have progressed so far as to justify our turning our attrition largely to nucleoproteins. Will you send me reprints of your papers on nucleic acids, especially those in which you discuss your new ideas about the bonding?

  Corey is now in England, and I hope that you will talk with him. I do not know what part of this month he plans to spend in Cambridge, but I think it very likely that he will come to see you.

  Right now we are working hard on the structure of silk fibroin. We have found a structure that, so far as the calculations have gone yet, accounts essentially perfectly for the observed intensities of x—ray diffraction. If the remaining calculations give as good results, we shall have, for the first time in the history of proteins, a protein structure which has been tested by completely detailed comparison of observed and calculated x-ray intensities. Our structure involves alternation of glycine residues and other residues, principally alanine; we have not taken into consideration the side-chain atoms other than the β-carbon atoms.

  Professor Todd 5/12/52

  There is a faint superstructure, which seems to be due in the main to the presence of occasional serine residues - perhaps every sixth residue in each polypeptide chain is a serine residue. However, it seems unlikely that the structural basis of the superstructure, involving these rarer amino acid residues, can be determined without a great deal more work.

  I enclose a copy of a statement that I made about my passport, a letter that I sent to President Truman, in an effort to get the original decision changed, and a statement about my political beliefs that I made last year.

  With best regards, also to Alison and the children, I am

  Sincerely yours,

  Linus Pauling:W

• Letter from LP to Senator Hubert H. Humphrey RE: writes to Senator Humphrey about his problems obtaining a passport from the State Dept. that would enable him to travel to England to participate in the Royal Society meeting on proteins. Sends his statement about the matter, a copy of his earlier letter to President Truman, and his statement about his political beliefs. Explains himself thoroughly in the letter. [following letter from LP to Senator Humphrey May 23, 1952] [Filed under LP Correspondence: Box #163, Folder #5].
• Letter from LP to Senator Wayne Morse RE: writes in response to his daughter, Linda Pauling, protesting to Senator Morse against the action of the Department of State refusing LP a passport. Gives Senator Morse more information about the matter, including copies of his letter to Pres. Truman, his statement made about his political beliefs and a paper he prepared describing the circumstances of the refusal of the passport. Mentions statements that were made by members of the Royal Society. [three copies of this letter included in the file] [Letter from Senator Wayne Morse to LP May 23, 1953] [Filed under LP Correspondence: Box #250, Folder #2: file (Morse, Wayne)].
• Letter from LP to the Editors of Nature RE: writes in response to their request that he send them a copy of his discourse of the Structure of Proteins that he was scheduled to deliver at the Royal Institution. Unfortunately he was refused a passport and so was unable to give the speech. [Letter from Editors of Nature to LP April 18, 1952].
• Letter from Prof. S. W. Hockett of Bonewitz Chemicals, Inc., to LP RE: requests advice on what facilities are available at Caltech for research students in infrared absorption problems, esp. in the field of "fingerprinting." [Letter of response from LP to Prof. Hockett May 16, 1952] [Filed under H Correspondence: 1952, Box #166, Folder #3]
• Letter from Walter R. Kirner, of the National Science Foundation, RE: Requests that LP review Proposal No. 249, submitted by Dr. George Duffey of South Dakota State College of Agriculture and Mechanic Arts, for a research proposal from the foundation. Encloses some suggested points to consider when evaluating a proposal. [response from LP May 21, 1952] [Filed under LP Science: Box 14.029, Folder 29.1]
• Memorandum from George W. Josten, Pasadena City Schools, to W. H. Freeman and Company RE: Discusses ion concentration and pH. [Filed under AHP Organizational Correspondence M-Z: Box 1.008, Folder 8.2]
• Pauling Scrapbook: Los Angeles Examiner article entitled "Pauling Raps Passport Ban" RE: discusses LP being refused a passport to England to give a speech to the Royal Society of London. Attributes the whole matter to the McCarran Act, and says that it interferes with the progress of science. [picture of LP with a protein structure model included with the article]. [Filed under LP Biographical: Box 6.006, Folder 6.24]
• Typed research notes on MCr3O8. [Filed under LP Science: Box 10.003, Folder 3.5]

• AHP writes cheque: to: Hay Adams House amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 1-16: Letter from Clark Forman, Director of the Emergency Civil Liberties Committee to LP RE: describes their committee to LP and invites him to allow them to use his case in their pamphlet with examples of citizens' civil liberties infringements made by the State Dept. Includes some additional information about their committee. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from David Todd of the Dept. of Chemistry of Amherst College to LP RE: encloses a copy of a letter they just sent to the State Dept. Asks for further information that they can use in LP's case. They would like to bring the matter up at their next AAUP meeting. Includes a copy of a letter they sent the Secretary of State about the matter. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from LP to Prof. Arne Tiselius of the Biokemiska Institutionen of Upsala Universitet, Sweden RE: writes about his inability to travel in England due to his ordeal with the State Dept. Goes on to describe his work on the structure of proteins. Encloses three documents regarding the ordeal. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from Prof. W. T. Astbury of the Dept of Biomolecular Structure at the University of Leeds to LP RE: thanks LP for further information regarding his inability to come to England for the Royal Society Discussion on the structure of proteins. Goes on to give his opinions on why he doesn't agree with the decision made by the State Dept. regarding LP's case. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Note from Max Mason of Caltech to LP RE: apologizes to LP for all the trouble he is going through with the Dept. of State. Also discusses his family's health. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Note from Montague Cleeves, M.D. to LP RE: writes in apology to LP for all his trouble with the Dept. of State. Goes on to give his own opinions and philosophies regarding the situation. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from Frank Aydelotte of the Office of the American Secretary of The Rhodes Scholarship Trust RE: writes to LP in response to a Times article discussing LP being denied a passport. Mentions that LP's being Vice President of the Federation of Scientific Workers was made a large deal in the article. Sends a copy of the Times article. [Letter of response from LP May 14, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Newspaper Clippings: 1952n. Article from The Los Angeles Times titled "Caltech President Backs Dr. Pauling's Red Denial" discusses LP's denial of a passport to go to England for the Royal Chemical Society conference on the structure of proteins.
• LP Newspaper Clippings: 1952n. Article from The Washington Post titled "Pauling, Noted Chemist, Refused Passport."
• LP Newspaper Clippings: 1952n. Article in Aftenposten titled "Kjent USA-forsker nektes britisk visum," reporting on LP's passport problems. [article in Norwegian]
• LP Newspaper Clippings: 1952n. Brief article from The Boston Daily Globe titled "An Un-American Import" tells about LP's refusal of a passport to visit England. Implies that this is not the first time an eminent scientist trying to attend an international professional conference was denied a passport.
• LP Newspaper Clippings: 1952n. Pasadena Star-News article "DuBridge Says No Reason to Believe Pauling a Red" has a quote from DuBridge saying that Caltech would "never retain a Communist on its staff." Article is in regards to LP's denial of a passport to visit England for a Royal Chemical Society conference.
• LP writes cheque: to: Associated Alumni of U.N.B. amount: $3.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Dr. Fankuchen to LP RE: writes in response to noticing that LP is having trouble with the State Dept. regarding his passport. Goes on to discuss his opinions on the matter. Reports that he also is having passport problems. Sends a copy of a letter regarding the matter from Dr. Fankuchen to Dean Acheson, Secretary of State. [Letter included] [previous letter from LP to Dr. Fankuchen April 15, 1952, following letter from LP to Dr. Fankuchen May 20, 1952] [Filed under LP Correspondence: Box #117, Folder #4].
• Letter from Dr. Rossini to Dr. Edward Wichers of the National Bureau of Standards, copy to the Members of the NRC Committee on Physical Chemistry RE: Acknowledges the letter sent by Dr. Wichers on May 9, 1952 regarding the report on the number of molecules in a chemist's mole. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from Dr. Rossini to Prof. Albert Noyes, Jr., copy to Members of the NRC Committee on Physical Chemistry RE: Informs Prof. Noyes that the report by the Subcommittee on Fundamental Constants dealing with the number of molecules in the chemist's mole has been approved by the National Research Council. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from H. A. Ogden, from the organic chemistry department at the Imperial College of Science and Technology to LP RE: Thanks LP for sending him two reprints on polypeptide structures. Regrets that he was unable to attend the Royal Society symposium on protein structure.
• Letter from L.A. DuBridge to Dr. Richard M. Badger [cc: LP] RE: informs Dr. Badger that the Board of Trustees has voted to increase his salary. [Filed under LP Correspondence: Box #96, Folder #16 (Dubridge, Lee A.)].
• Letter from LP to Dr. and Mrs. Spitzer RE: Congratulates them on having a baby girl. Tells about how their trip to Europe was interrupted as the State Department would not issue him a passport.
• Letter from LP to Prof. Ray Pepinsky of Pennsylvania State College RE: inquires about why there was no mention about Dr. Pepinsky's work in a note he saw in the April 5 J.A.C.S. on the structure of mycomycin. [Letter of response from Prof. Pepinsky to LP May 26, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Pauling Catalog: Los Angeles Times article entitled "Caltech President Backs Dr. Pauling's Red Denial" RE: Discusses Dr. Lee DuBridge and his support of LP's statement that he never has been and is not now a Communist. Mentions LP's passport incident.

• AHP writes cheque: to: Sue Perry amount: $35.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Copy of letter from Grace G. Hudson to the Secretary of State, Hon. Dean Acheson RE: writes a letter in favor of LP and critical of the State Dept.'s decision to deny LP a passport for travel to England for scientific purposes. [Filed under LP Biographical: Box 2.002, Folder 2.7]
• Copy of letter from LP to Dr. Frank Aydelotte RE: writes that he was unable to travel to England due to his passport being denied him. Encloses a statement that he prepared about the matter as well as a copy of his letter to Pres. Truman. [Letter from Dr. Aydelotte to LP May 13, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Copy of letter from LP to Prof. W. T. Astbury, F. R. S., Dept. of Biomolecular Structure, The University of Leeds 2 RE: is sorry to not have been able to attend the Royal Society Meeting. Goes on to discuss the work on proteins that he is currently working on, namely with intensity calculations for silk. [Letter from Prof. Astbury to LP May 7, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Newspaper Clippings: 1952n. Article from the Chicago Daily Sun-Times titled "America's Own Iron Curtain" challenging the State Department to produce evidence against LP justifying denying him a passport.
• Letter from Arthur B. Simon, W. H. Freeman and Co., to LP RE: Suggests he may be interested in the enclosed remark. Does not believe Mr. Freeman knows that he is unable to go to England. [Filed under AHP Organized Correspondence M-Z: Box 1.008, Folder #8.2]
• Letter from I. Fankuchen, of AAScW to LP RE: Expresses an interest in including LP's idea of an article on preventative medicine from the standpoint of the fundamental scientist in the AAScW proposed book The Scientist and the Arts of Peace. [Filed under LP Peace: Box 4.009, Folder 9.1]
• Letter from LP to Bern Dibner RE: Thanks him for his comments regarding the American Philosophical Meeting. [In reply to letter from Dibner to LP May 8, 1952]. [Filed under LP Science: Box 14.011, Folder 11.2].
• Letter from LP to Charles Goodeve, RE: LP is considering the possibility of attending the discussion of the Faraday Society on the Physical Chemistry of Proteins held in August. LP is enclosing a document about his passport being refused. LP had assured the State Department that his travel was for scientific purposes but they still refused him his passport. [Reply from F.C. Tompkins May 16, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]
• Letter from LP to Dr. J. B. Koepfli, Office of Science Advisor of the Dept. of State RE: hypothesizes how Washington media got hold of information on the State Dept.'s refusal of a passport to LP. Goes on to describe his feelings and opinions about the situation. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to Dr. L. H. Farinholt of the American Embassy in London, England RE: writes about his disappointment with the Department of State. Mentions speaking with Mr. Boykin and Dr. Koepfli. Encloses a statement for the press and a copy of a letter he wrote to Pres. Truman. Asks Dr. Farinholt if he could talk to Hans Clarke about the matter with the Dept. of State. Mentions how his work on the structure of proteins is going. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to F.C. Tompkins, RE: LP wants to know if it is too late to submit a paper for the General Discussion being held at Cambridge. LP had prepared a paper for the meeting of the Royal Society on the configuration of polypeptide chains in proteins and LP is not sure if Tompkins would want him to discuss the same general topic at Cambridge. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]
• Letter from LP to Mr. Henry Allen Moe of the John Simon Guggenheim Memorial Foundation RE: writes that he was pleased to see an article regarding Mr. Moe's address in Nature magazine. Goes on to discuss his own problems with the Dept. of State regarding his passport. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to Mr. J. J. Joseph of the Arts, Science and Professions Council RE: thanks him for phoning to extend Prof. Fairchild's offer to assist him in connection with his passport woes. Goes on to discuss the meetings he is missing in Europe. Encloses his statement telling his story. Hopes for further assistance in the matter. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Letter from LP to Prof. Albert Einstein of the Institute for Advanced Study RE: Writes a letter describing his troubles with the Dept. of State regarding his passport and how this relates to his intended travel to England. Encloses copies of his letter to President Truman and a statement about his difficulties with the Dept. of State. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• Note from LP to himself RE: Talks about the lattice structure of silk. [on bottom two thirds of page are handwritten notes with experimental data, along with comments]. [LP Science: Box 6.002, Folder 2.7]

• LP Biographical Political: Passport Problems, May 1-16: Copy of letter from LP to Dr. MF Perutz RE: writes of his disappointment in not being able to attend the Royal Society Meeting due to passport problems. Asks questions about the responses and objections to the alpha helix. Was sorry that he was unable to discuss matters on protein structure with him, Kendrew and Bragg. Also mentions Perutz's work on Fourier terms for hemoglobin and [Letter from Dr. Perutz to LP May 15, 1952]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copy of letter from Dr. Philos O. Bastiansen of the Universitetets Kjemiske Institutt to LP RE: encloses a paragraph cut from the Norwegian conservative newspaper Aftenposten regarding LP's being refused a visa to England. Asks LP for any further information about the news. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from Colston E. Warne to Mr. Acheson. Secretary of the State, RE: writes in response to the NY Times article regarding the State Dept's refusal of a passport to LP. Gives his opinions about the matter in favor of LP.
• LP Newspaper Clippings: 1952n. Article from Pasadena Independent titled "Pauling Answers Passport Rejection With Strong Denial He's Communist" in which LP discusses the situation with the Independent. [photo of LP included]
• LP Newspaper Clippings: 1952n. Article from newspaper California Tech titled "Dr. Pauling's passport denied by State dept."
• LP Newspaper Clippings: 1952n. Editorial comment from The Dallas Morning News titled "He Will Stay At Home" discusses LP's denial of a passport. Claims that LP's "aid and comfort to the Communist cause in the United States has been outstanding."
• Letter from C. V. Tomdo to LP RE: asks for LP's opinion on the possibility of "differences in the ultraviolet absorption spectra for the tree immunological types of the foot and mouth disease virus." Asks for help from LP on his working hypothesis. [Letter of response from LP to Dr. Tondo May 29, 1952] [Filed under LP Correspondence: Box #410, Folder #17].
• Letter from Dr. H. B. McClure of the Carbide and Carbon Chemicals Company, to LP RE: writes to tell LP that their large scale coal-hydrogenation chemicals pilot plant at Institute West Virginia is now operating. [Attached to the letter is a list of four groups of products arranged in the expected order of their availability] [Letter of response from LP to Dr. H. B. McClure May 22, 1952] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from Dr. P. O. Bastiansen to LP RE: Sends a clipping from a Norwegian newspaper regarding the British refusal to give LP a visa to England. Asks for LP to comment on the situation. [Filed under LP Correspondence: Box #24, Folder #3].
• Letter from LP to Dr. F. H. Spedding of Iowa State College RE: congratulates Dr. Spedding on his election as a member of the National Academy of Sciences. Brings his attention to the Proceedings of the National Academy of Sciences as a medium of publication of important papers. [Filed under LP Correspondence: Box #367, Folder #3: File (Spedding, F. H.)].
• Letter from LP to Dr. G. E. Burch RE: writes that he has just received Dr. Burch's letter. Talks about his ordeal in failing to receive a passport to England. Wishes Dr. Burch success in getting Dr. Richard Coppedge for the sickle cell work. Suggests that Dr. Itano come down to spend time with Dr. Burch. Says he is devoting most of his time to the study of the problem of the configuration of polypeptide chains of proteins. Says LP Jr. will be interning in Honolulu. [Letter from Dr. Burch April 18, 1952, reply from Dr. Burch May 23, 1952] [Filed under LP Correspondence: Box #33, Folder #8].
• Letter from LP to Dr. Sterling B. Hendricks of the Bureau of Plant Industry, Sols, and Agricultural Engineering RE: Congratulates Dr. Hendricks on his election to the National Academy of Sciences. Mentions his own troubles with obtaining a passport. Hopes that he will consider publishing some of his papers in the Proceedings of the National Academy of Sciences. [following letter from LP to Dr. Sterling B. Hendricks June 17, 1952] [Filed under LP Correspondence: Box #156, Folder #3].
• Letter from LP to J. F. Hyde of the Dow Corning Corporation RE: writes that he will not be able to submit a paper for the American Chemical Society meeting on Inorganic Polymers, or to attend for that matter. [Letter from Mr. Hyde to LP April 22, 1952] [Filed under H Correspondence: 1952, Box #166, Folder #3]
• Letter from LP to Mr. George E. Farrand RE: LP is pleased that Mr. and Mrs. Robinson received recognition for their contributions to Caltech to fund cancer research. LP discusses the importance of fundamental research in the field of medicine. [Filed under: LP Biographical, Box 1.020, Folder 20.5]
• Letter from LP to Mr. Joseph Capsin RE: thanks Mr. Capsin for his letter of April 20, 1952. Hopes that Linus Jr. will visit him while he is in Honolulu. [Letter from Mr. Capsin April 20, 1952] [Filed under LP Correspondence: Box #57, Folder #9].
• Letter from LP to Prof. Sara W. Prentiss of Oregon State University RE: writes to thank her for sending him and AHP a copy of the paper containing "Linda's" pictures. Discusses his children and his travel plans. [Filed under: LP Correspondence: Box #312, Folder #17]
• Letter from Professor J. Timmermans to LP, RE: Timmermans is inviting LP to present to the Institut International de Chimie Solvay on the topic of structure and configuration of protein. Timmermans notes that during LP’s stay in Brussels he will be a guest of the Institute and his travel expenses will be covered. [LP’s reply May 29, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1953), Box 1953s, Folder 1953s.4]
• Letter from [?] to LP RE: Agenda for the May 15, 1952 meeting of the Caltech Committee on Graduate Study. The proposed topics are the residence requirements of a particular individual, the approval of "Engineering Science" as a major and minor subject for doctorate, and policy review of the admission of special graduate students. [Filed under: LP Biographical, Box 1.018, Folder 18.2]
• Letter to Sir L. Bragg RE: Indicates that he has just received the April 22, 1952 invitation as guest to the Royal Society Club meeting from Bragg, but is unable to attend due to not being able to obtain a passport. Hopes that this is not an inconvenience. Hopes that "no difficulties arise that prevent you from finding the phases for the five remaining layer lines of hemoglobin." Hopes that he can send a paper by himself to be included in the Discussion Meeting of the Faraday Society on the physical chemistry of the proteins (August 6-8). [Letter response to LP May 21, 1952]
• Note from D. M. Pahad to LP RE: writes to inquire about how to perform some procedures involving the manufacture of lead acid type of storage batteries. [Letter of response from LP to Dr. Pahad July 21, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Pauling Scrapbook: California Tech (Pasadena California) article entitled "Dr. Pauling's passport denied by State dept." RE: gives a few basic facts about the situation of LP's passport denial and then prints LP's letter to the President of February 29, 1952 appealing the State Department's refusal of his passport. [Filed under LP Biographical: Box 6.006, Folder 6.25]
• Pauling Scrapbook: Pasadena (California) Independent article entitled "Pauling Answers Passport Rejection With Strong Denial He's Communist." RE: discusses LP's statement that he is not a communist in response to the government recently refusing him a passport to England. Goes on in detail about the issues relating to the House Un-American Activities Committee, and their attacks on the public. [picture of LP included in article].

• LP Biographical Political: Passport Problems, May 1-16: Letter from B. E. Schaar of Schaar and Co., "Complete Laboratory Equipment" to LP RE: writes that upon learning of the refusal of a passport to LP, he wrote a letter to the Secretary of State, Mr. Dean Acheson [included]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Letter from LP to Dr. J. B. Koepfli, Office of Science Adviser of the Dept. of State RE: encloses copies of his letters to the President and the Secretary of State. Re-states his reasons for desiring a passport. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: Note from Charles Milton to LP RE: writes that he has just learned in the "Times" about the State Department's refusal to issue LP a passport. Goes on to give his opinion on the matter and includes an article entitled "U.S. 'Neurotic' Fear Criticized by Bishop." [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: copies of letters from E. Miles Day, U.S.N.R. to Mr. DuBridge RE: expresses outrage in learning of LP being denied a passport. Goes on to outline his opinions on the matter in favor of LP. Hopes something can be done to counter the bad news, sends along a check to help. [Note to LP attached with an illegible signature RE: "Linus Pauling: This will interest you. I believe no appeal to the courts is possible. What shall we do with the check?" [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from A.H.Shapley of the Federation of American Scientists, to LP RE: writes that he has seen the NY Times story of May 12, 1952 concerning the State Dept.'s denial of him a passport. Requests a copy of his press statement for use by their committee on passport and visa problems. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from LP to Dr. Detlev W. Bronk, President of the National Academy of Sciences RE: encloses copies of letters that he just wrote to President Truman and to the Secretary of State. Informs him that he has again applied for a passport, now for travel in the British Isles in the Summer. Asks for his help. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7]
• LP Biographical Political: Passport Problems, May 1-16: letter from LP to The Secretary of State asking that a passport be issued to him to permit him to travel to England in the Summer. [several copies included in this file]. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.7] [Also filed under LP Safe: Box 2.021, Folder 21.35]
• LP Newspaper Clippings: 1952n. Article from The Washington Post titled "Scientific Genius" discusses the irony that LP has been labeled a Communist as he was thought by the Russians to have done harm to Soviet chemistry. Additionally, the newspaper is worried that the act of refusing a passport to LP is very similar to actions by the Russian government.
• Letter from Dr. Wichers to Dr. Rossini, cc: members of the NRC Committee on Physical Chemistry [of which LP was a member] RE: Elaborates on his comments regarding the proposal on the standardization of the chemist's mole. [4 pages] [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from F.C. Tompkins to LP, RE: Tompkins is inviting LP to attend the meeting of the Faraday Society on the 8th and 9th of September. The subject of the discussions will be “The Reactivity of Free Radicals.” Tompkins is enclosing a copy of the program and hopes that LP will accept the invitation to attend. [LP’s letter May 14, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]
• Letter from LP to Dr. H. Harry Szmant RE: thanks him for his letter and the manuscript and reprint. Goes on to critique the manuscript regarding electronic resonance and molecules. Encloses a reprint of one of his own papers on sulfur-oxygen bonds. [Letter from Dr. Szmant to LP May 9, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Dr. W. E. Macpherson of the College of Medical Evangelists RE: writes in response to Dr. Macpherson's invitation to speak at his institution's 1953 Postgraduate Assembly and Convention, that he may be able to fit it into his schedule. Goes on to discuss his current work. [Letter from Dr. Macpherson October 22, 1951] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from LP to President Truman RE: reminds the President the petition that he sent asking him to rectify the action of the Dept. of State in refusing a passport to him. As a result of Pres. Truman's actions, he was given an interview with the Dept., though he later found that their earlier decision was upheld. Again asks that Pres. Truman help him obtain a passport. [Letter from LP to President Truman February 29, 1952, letter from LP to Pres. Truman May 20, 1952] [Filed under LP Correspondence: Box #408, folder #5 (Truman, Harry S.)] [Also filed under LP Safe: Box 2.021, Folder 21.34]
• Letter from LP to Prof. S. W. Hockett of Bonewitz Chemicals, Inc. RE: writes in response to Prof. Hockett's enquiry. States that Prof. R. M. Badger of their department is the authority on the infrared field. [Letter from Prof. Hockett May 12, 1952] [Filed under H Correspondence: 1952, Box #166, Folder #3]
• Letter from LP to himself. [Filed under LP Science: Box 8.001, Folder 1.12]

  May 16, 1953

  Note to LP from himself

  Biological Specificity

  Delbrück told me about some recent work by various people, including Lewis in our Biology Division, who investigates as many as 50,000 fruit flies in studying crossing-over.

  There are groups of genes, occurring close together in the chromosomes, that serve closely related purposes. One of these is called lozenge. There seem to be about a dozen alleles that occur not as alternatives at the same locus, but rather that occur simultaneously in very closely adjacent loci. This lozenge is recessive. It is of such a nature that heterozygosity at one locus does not affect the character. Two heterozygosities, however, show up as the wild type if they are of the cis form, such as loz₇ and loz₁₂ in the same chromosome, but as the lozenge dominant if they are of the trans form, with loz₇ in one chromosome and loz₁₂ in the other chromosome.

  When Delbrück told me about these results, I pointed out that a simple explanation of them is that the closely related genes are involved in the production of a substance through a sequence of reactions, and that the intermediates are not able to diffuse, without destruction, from one chromosome to the other, and hence the product must be the result of the proper set of genes in a single chromosome. Today when I talked to Lewis about this matter he said that this was proved to be the case, and he added another point - he mentioned that he had suggested (I believe that this is right) that the genes in adjacent loci are the result of small mutations on a duplicated pair - that is, that one gene is repeated because of duplication, and then undergoes a mutation. He mentioned that in a sequence of reactions a to b to c the catalyzing enzyme for the first reaction and that for the second reaction are related through the substance b, which is the product of the first reaction and a reactant of the second reaction, and hence that these enzymes might be expected not to differ greatly from one another, and a gene responsible for the first enzyme (or identical with it) might have to undergo only a rather small change in configuration to become a gene responsible for or identical with the second enzyme.

• Letter from Prof. A. Wormall to LP RE: thanks LP for sending him reprints of his and Prof. Corey's papers on the subject of the structure of proteins. Invites LP to visit his department in London. [Letter of response from LP to Prof. Wormall October 7, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Pauling Scrapbook: Royal Institution of Great Britain Lectures After Easter 1952 Friday Evening Discourses of the Royal Institution Program RE: lists LP as a speaker for May 16, 1952 on the structure of proteins. [Filed under LP Biographical: Box 6.006, Folder 6.25]

• AHP writes cheque: to: California Inst. of Tech. Bookstore amount: $29.29 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Frederick M. Thomas to LP RE: is sorry to hear about LP's trouble regarding his passport. Comments on the situation with his own opinions. [Note in pencil at top: "LP- see attached- there is more correspondence down stairs, which I'll get if you want it. BW] [Letter of response from LP to Mr. Thomas June 30, 1952] [Filed under LP Correspondence: Box #410, Folder #17].

• LP research notes calculating intensities from collagen residues. [Filed under LP Science: Box 6.004, Folder 4.7]
• Note from Dr. Herbert Gutfreund to LP RE: writes that he is currently on a sabbatical and would like to visit California at the end of May. Asks if he could visit Caltech at that time and if he could have accommodations made at the Athenaeum [Letter from LP to Dr. Gutfreund March 24, 1952] [Filed under G: Correspondence 1952, Box #140, Folder #16]

• "Plan of Reorganization by recapitalization of W.H. Freeman and Company, A California Corporation." [Filed under LP Safe: Box 2.009, Folder 9.36]
• AHP writes cheque: to: Johnson for Assembly Committee amount: $5.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Southern Counties Gas Company amount: $40.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: The New Yorker amount: $12.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Inter-office memo from P.C. Eaton to LP, RE: Eaton forwards an excerpt from a letter written by George E. Zink, Brooks School, in which he says that he is not convinced of College Chemistry's effectiveness with high school students. He also says that the book has increased his knowledge and understanding of chemistry considerably. [Filed under LP Books, 1950b1.4]
• LP Newspaper Clippings: 1952n. Article from The Courier-Journal titled "A Velvet Curtain Falls on Passports" discusses recent issues with the United States not granting passports, including the case with LP. [clipping sent by Barry Bingham, editor of the Journal]
• LP Newspaper Clippings: 1952n. Article from The New York Times titled "Dr. Pauling's Predicament" comments on how LP is viewed by the State Dept. and the Soviets. Remarks that the whole passport system needs looking into.
• Letter from Arthur B. Simon, W.H. Freeman and Co., to LP . RE: Simon says that the Cornwall Press would like to know what should be done with LP's manuscript. [Filed under LP Books, 1950b1.4]
• Letter from C. H. Bamford to LP RE: Thanks for the May 1st letter from LP. Sorry that LP was not able to visit or attend the Royal Society discussion of May 1st. The rest of the letter is a long and detailed discussion of research on methyl and benzyl esters of poly-L-glutamic acid. Mentions research on helices. [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from Dr. Frank W. Weymouth to LP RE: ask Colleagues to look through their pamphlet and to recognize the wrong that is being done by the House Committee on Un-American Activities to many professional groups including the field of education. [Letter is part of a pamphlet about the House Committee on Un-American Activities] [Filed in unsorted correspondence 1952].
• Letter from Joe Capsin to LP RE: Thanks LP for his letter of May 15, 1952. Discusses in great detail why LP should not feel bad about being rejected a passport by the U.S. government. Also encloses a letter from Nils P. Larsen in order to give LP an idea about the way he thinks. [Letter from LP to Joe Capsin May 29, 1952] [Filed under LP Correspondence: Box #57, Folder #9].
• Letter from LP to Dr. Harold C. Urey RE: writes about his passport problems and includes copies of five documents relating to the situation. Encourages Dr. Urey to help him by writing on his behalf to the President and the Secretary of State. [Letter from Dr. Harold C. Urey to LP June 2, 1952] [Filed under LP Correspondence: Box #419, Folder #1: File (Urey, H.)].
• Letter from Prof. Arne Tiselius of Biokemiska Institution, Sweden to LP RE: brings up a rumor that he heard that LP was refused a passport. Offers to help out. Mentions that he is following LP's work with proteins. [Letter from LP to Prof. Arne Tiselius May 24, 1952] [Filed under LP Correspondence: Box #407, Folder #5].
• Los Angeles Times newspaper advertisement claiming that chlorophyll in tooth paste reduces decay. [Filed under LP Science: Box 10.006, Folder 6.1]

• LP Biographical Political: Passport Problems, May 17-31: Letter from Prof. Jack W. Williams to LP RE: Thanks LP for his letter and mentions his awareness of LP's passport woes. Offers to help in any way. [Letter of response from LP to Prof. Williams May 29, 1952]. [Filed under: LP Biographical 2.002, Folder 2.8]
• Letter from A.L. Wirin to LP RE: Enclosed is a copy of the January 23, 1952 bill and a copy of a note from the Industrial Review Board to Wirin accepting the change in date of LP's appearance before the board to September 17, 1952.
• Letter from Dan McLachlan, Jr. to LP RE: writes to inform LP that prominent crystallographer Professor I. Fankuchen of the Brooklyn Polytechnic Institute is planning to be in San Francisco in July. Dr. McLachlan, Jr. hopes to encourage him to visit his university as well and furthermore hopes that LP will encourage him to extend his travels to visit Caltech as well. [Letter of response from LP to Dr. McLachlan, Jr. May 23, 1952] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from Dr. Perttu V. Laakso to LP RE: writes that he is a Finnish chemist at Helsinki University who has just been awarded a scholarship from the Institute of International Education. He is now able to travel to the U.S. and asks LP if he could visit their department at Caltech. [Letter of response from LP to Dr. Laakso June 2, 1952] [Filed under L: Correspondence 1952, Box #230, Folder #18]
• Letter from Dr. Rossini to Dr. Edward Wichers, copy to LP RE: Acknowledges the May 16 letter from Dr. Wichers. Discusses the proposal regarding the definition of the number of molecules in the chemist's mole, claiming that Dr. Wicher's letter does not seem to disagree with the proposal, only the possible formal implementation. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from LP to Dr. Edward C. Reifenstein, Jr. RE: gives permission to reproduce figures from his paper on the Structure of Fibrous Proteins of the Collagen-Gelatin Group. [Letter from Dr. Reifenstein, Jr. to LP May 12, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Dr. Fankuchen RE: sends a copy of his statement regarding his passport problems with the State Department and a copy of his letter to President Truman regarding the matter. Writes that he has applied again for a passport in the hopes of traveling to England for the Faraday Society discussion on the physical chemistry and structure of proteins. [previous letter from Dr. Fankuchen to LP May 13, 1952, following letter from Dr. Fankuchen to LP December 30, 1952] [Filed under LP Correspondence: Box #117, Folder #4].
• Letter from LP to Dr. Hans Kuhn of the U of Basel Chem. Dept. RE: writes that they have just noticed an error in his paper on bond orbitals in the Journal of Chemical Physics. An equation written by Professor Shomaker that is apparently now obsolete was used and mistakenly attributed to LP in the paper [Letter of response from Dr. Kuhn to LP June 14, 1952].
• Letter from LP to Editor of Aftensposten, RE: LP mentions that an article that appeared on May 12 stated that he was prevented from making a trip to England for the lecture before the Royal Institution of Great Britain because of the denial of a visa by England. LP asserts that this was not the case, LP was prevented from making the trip to England because of the refusal by the Department of State of the United States to issue him a passport. [Reply from Bjorn Bunkholdt June 21, 1952] [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.14]
• Letter from LP to President Truman RE: in addition to the petition that he sent Pres. Truman May 16, 1952, sends a statement about his life and career which he might use to supplement the petition. [Letter from LP to President Truman May 16, 1952, letter from LP to President Truman June 19, 1952] [Filed under LP Correspondence: Box #408, Folder #5(Truman, Harry S.)].
• Letter from Louis Levine, Office of Naval Research, to LP RE: confirms a proposed May 27, 1952 meeting between them to discuss a proposed conference on the molecular structure of proteins. [Various names handwritten at bottom include: Sir Lawrence Bragg, Max Perutz, Crick, and Sanger]. [Filed under LP Science: Box 13.004, Folder 4.3].

• AHP writes cheque: to: Alumni Association C.I.T. amount: $4.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: California Legislative Conference amount: $1.50 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Girls Vacation Fund Inc. amount: $5.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Independence Publishers amount: $1.50 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Professor Henry Pratt Fairchild amount: $5.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Albert Einstein to LP RE: commends LP for fighting for the right to travel in regards to the U.S.'s policies as a result of its current situation with the Soviet Union. Sends LP a copy of his letter to the Secretary of State. [Letter from LP to Albert Einstein May 19, 1952] [Filed under LP Correspondence: Box #107, Folder #1] [Also filed under LP Safe Box 2.002, Folder 2.32]
• Letter from LP to Dr. A. H. Shapley of the Federation of American Scientists RE: writes in regard to his passport problems. Sends copies of documents about the matter. Goes on to clarify the documents. [Filed under LP Correspondence: Box #362, Folder #1: File (Shapley, H. 1946-1958.)].
• Letter from LP to Dr. Bastiansen RE: thanks Dr. Bastiansen for his letter. Goes on to describe his passport problems in detail. [Letter from Dr. Bastiansen to LP May 15, 1952, letter of response from Dr. Bastiansen to LP May 31, 1952] [Filed under LP Correspondence: Box #24, Folder #3].
• Letter from LP to Dr. Kirner, of The National Science Foundation, RE: Replies to Dr. Kirner's May 12, 1952 letter by saying that he does not recommend approving this grant as the work performed by the proposal writer is not of sufficiently high caliber. [Filed under LP Science: Box 14.029, Folder 29.1]
• Letter from LP to T. Weiner saying that Max Delbrück had proposed the idea of light being scattered by an electromagnetic field, and recommends he write to the authors of two recent papers in Physical Review pertaining to a similar experiment. [Reply to Weiner, May 6, 1952]
• Letter from Ray Pepinsky to Louis Levine cc: LP RE: Thinks that the American Crystallographic Association would be a good co-sponsor for the Protein Substitutes Group. Also discusses the Pauling passport issues. [Filed under LP Science: Box 13.004, Folder 4.3].
• Letter from W.L.Bragg RE: A greeting and thanks for the last letter, is interested in seeing LP soon. Sorry LP wasn't at the Royal Society Club meeting, took Corey instead. [Letter to Bragg May 15, 1952]

• LP Newspaper Clippings: 1952n. Article in Pasadena Star-News titled "Acheson Bans Report on Pauling Rebuff" discusses how Secretary of State Dean Acheson promised to give reasons for denying passports to leading scientists, but has still not reported.
• LP writes cheque: to: California Institute of Technology amount: $21.75 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP writes cheque: to: Henry Richter amount: $14.81 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Ian Campbell, Acting Chairman, Caltech Division of the Geological Sciences, to E.C. Watson, cc: LP. RE: Campbell recommends that Caltech offer a professorship to Dr. G. Evelyn Hutchinson of Yale. Asks for LP's opinion on the matter. [Letter from LP to Watson May 26, 1952]. [Filed under: LP Biographical, Box 1.030, Folder 30.8]
• Letter from LP to Dr. H. B. McClure RE: thanks Dr. McClure for his letter of May 15, 1952, and looks forward to learning more about their experience with this new technique within the chemical industry. [Letter from Dr. McClure to LP May 15, 1952] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from LP to Dr. J. L. Morrison RE: Sends Dr. Morrison all of the material relating to his work and is glad he is preparing to publish it. Goes on to write about how the discussion should be carried out. Encloses Dr. Fred J. Ewing's determination of the successive acid constants of the dyes, from Dr. Morrison's titration data. Requests that he send a manuscript for review if he wishes to publish it as a contribution from their laboratories. [Letter from Dr. Morrison to LP April 23, 1952, letter of response from Dr. Morrison to LP June 19, 1952].
• Letter from LP to Prof. E. C. Baughan RE: thanks for the letter and reprints of his paper on the vibration frequencies in diatomic molecules and in solid metals. Feels that there are parts that he doesn't understand, but will think about them further before troubling Prof. Baughan. [Letter form Prof. Baughan to LP May 1, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from LP to W.H. Freeman, W.H. Freeman and Co., RE: LP forwards the excerpt from George E. Zink's letter, in which Zink expresses his positive feelings towards College Chemistry. [Filed under LP Books, 1950b1.4]

• AHP writes cheque: to: North Star Bakery amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Sue Perry amount: $14.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP writes cheque: to: Bennett Travel Agency amount: $340.60 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Barbara W. Low of University Laboratory of Physical Chemistry, Harvard to LP RE: writes about her shock upon hearing that LP was not able to attend the Protein Symposium at the Royal Society Meeting in England due to passport issues with the State Dept. Goes on to discuss her work with the helix in relation to LP's work. [Letter from LP to Dr. Barbara W. Low July 21, 1952] [Filed under LP Correspondence: Box #218, Folder #3 (Low, Barbara)].
• Letter from Dr. Burch to LP RE: expresses sympathy about LP's inability to go to England due to the U.S.'s refusal to issue LP a passport. Says that Dr. Richard Coppedge should be joining him in September. Says LP's idea for them to spend a while with Dr. Itano is a good one. Passes on a note of interest to LP about the use of nitrites in the treatment of cyanide poisoning, as it might pertain to sickle-cell treatments. [Letter from LP May 15, 1952, response from LP June 2, 1952] [Filed under LP Correspondence: Box #33, Folder #8].
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation to LP RE: Encloses a New York Times article that discusses the passport issue. Also cited is an editorial that links LP's passport refusal to his involvement with the World Federation of Scientists. [Letter in reply from LP to Moe May 30, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Dr. Dan McLachlan, Jr. RE: thanks Dr. McLachlan, Jr. for his letter of May 20, 1952, and says that he has already been in touch with Dr. Frankunchen about his trip to the western United States and expects having him visit the Institute. [Letter from Dr. McLachlan, Jr. to LP May 20, 1952] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from LP to Dr. Louis B. Wright of the Folger Shakespeare Library RE: writes in regard to the matter of a sabbatical year for Henry Moe. [Letter of response from Dr. Wright to LP May 28, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from LP to Senator Hubert H. Humphrey RE: writes that he has submitted another application for a passport to the State Department. Gives details about the application in the enclosed copies of his letters to the Secretary of State and to President Truman. [previous letter from LP to Senator Humphrey May 12, 1952, letter of response from Senator Humphrey to LP May 29, 1952] [Filed under LP Correspondence: Box #163, Folder #5].
• Letter from LP to Senator Wayne Morse RE: writes to keep Senator Morse informed about his passport situation. Writes that he has again submitted an application to the Dept. of State for a passport that would allow him to travel to England in July. [Letter from Senator Wayne Morse to LP May 23, 1953, letter from Senator Wayne Morse to LP June 14, 1952] [Filed under LP Correspondence: Box #250, Folder #2: file (Morse, Wayne)].
• Letter from Senator Wayne Morse to LP RE: acknowledges LP's letter of May 12, 1952 and says that he has requested information from the State Dept. about why they refused LP a passport. [Letter from LP to Senator Wayne Morse May 12, 1952, letter from LP to Senator Wayne Morse May 23, 1952] [Filed under LP Correspondence: Box #250, Folder #2: file (Morse, Wayne)].
• Telegram from the Faraday Society to LP, RE: The Society invites LP to contribute a paper on the physical aspects of proteins at Cambridge in August. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]

• AHP writes cheque: to: Manor Market amount: $25.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Reed College amount: $50.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Walter Fritts amount: $48.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP writes cheque to: Reuss for Senator Committee amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from D. F. Sundberg of the U of California Los Alamos Scientific Lab, to LP RE: A man they are considering for hire, Mr. Bertram Keilin, suggested LP as a reference. Requests comments from LP on this man. [Letter of response from LP to Mr. Sundberg June 2, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Letter from Dimitri R. Stein to LP RE: writes in regard to a matter relating to the editorial policy of Gmelin at the request of Prof. Pietsch. Discusses Gmelin department practices and its policy on not including analytical chemistry from its volumes. Asks for LP's opinion in the matter. [Letter of response from LP to Dr. Stein July 21, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Prof. Arne Tiselius of Biokemiska Institution, Sweden RE: encloses copies of letters that he sent to the President and the Secretary of State requesting that he be issued a passport that will permit him to attend the Faraday Society Meeting on proteins. [Letter from Prof. Arne Tiselius to LP May 19, 1952, letter from LP to Prof. Arne Tiselius June 5, 1952] [Filed under LP Correspondence: Box #407, Folder #5].
• Letter from V.A. Pisapia to LP. [Filed under LP Safe: Box 2.039, Folder 39.70]
• Typescript, “The Best Interests of the United States.” [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.15]

• Itinerary for LP for May 25th through May 29th. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.8]

• LP attends the President's Commission on the Health Needs of the Nation. Possibly has breakfast with Ben May.
• LP writes cheque: to: Hay-Adams House amount: $50.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Christopher Mady, Secretary of Columbia University Development Plan Committee, to LP RE: writes that as part of their University planning, their committee is making a study concerning personnel and fields of academic interest. Asks that LP list the names of those ten active men whom he considers to have the most outstanding academic ability in his field of specialized interest. [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from LP to Dean Watson RE: LP supports the offer of professorship to Dr. G. Evelyn Hutchinson of Yale at Caltech. [related letter from Campbell to Watson May 22, 1952]. [Filed under: LP Biographical, Box 1.030, Folder 30.8]
• Letter from Mr. Farrand to LP RE: sends a summary of a statement that he made to some of his fellow trustees of Caltech concerning Henry M. Robinson. [statement manuscript included] [previous letter from LP to Dr. Farrand January 14, 1952, following related letter from LP to Mr. Farrand June 2, 1953] [Filed under LP Correspondence: Box #117, folder #6].
• Letter from Ray Pepinsky of Pennsylvania State College to LP RE: he was also surprised that the Pfizer group published their results on mycomycin without reference to his x-ray analysis of the preceding summer, however they are behind their publication schedule. Goes on to discuss their relations with the Pfizer group. [Letter from LP to Prof. Ray Pepinksy May 13, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from T. Weiner to LP RE: thanks LP for his letter. Mentions writing Dr. Delbruck about carrying out an experiment at Caltech involving a powerful electromagnet. [Filed under LP Correspondence: Box #443, Folder #20]

• A copy of Amendment 3 to Contract N6onr-24432, a contract between Caltech and the Office of Navy Research. ["For Information Only" is stamped on the page] [Filed under LP Science: Box 14.031, Folder 31.2]
• LP checks into the Wade Park Manor in Cleveland, Ohio. [Receipt, checkout May 29, 1952].
• LP visits Dr. Louis Levine at the Office of Naval Research and then travels from Washington D.C. to Cleveland
• Letter from F.C. Tompkins to LP, RE: Tompkins is inviting LP to present a paper to the General Discussion on “The Physical chemistry of Proteins” to be held at Cambridge from the 6th to the 8th of August. Due to the meeting that will occur in Toronto in August, and this meeting in September, Tompkins points out that there is a great strain on their printing facility and thus would like LP to send him a copy of his lecture as soon as possible. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]
• Letter from LP to AHP. [Filed under LP Safe: Box #1.020, Folder #20.1]

  [typewritten note from LP to AHP]

  27 May 1952

  Memo to Ava Helen Pauling

  From Linus Pauling

  In your efforts to raise some money for Henry Reuss of Miwaukee, in his campaign against McCarthy, I wish to suggest that checks that are sent should be made out to the Reuss for Senator Committee, and mailed to Dr. Henry A. Lardy, 3534 Heather Crest, Madison 5, Wisconsin.

  L.P.

• Letter from LP to Arthur B. Simon, W.H. Freeman and Co., RE: LP says that the manuscript of College Chemistry may as well be destroyed by the Cornwall Press. [Filed under LP Books, 1950b1.4]
• Letter from LP to Dr. Wilson RE: Is sorry they cannot hire Dr. Bergman. Cannot recommend anyone to him for work towards a master's degree in geochemistry. [Note from Dr. Wilson to LP April 24, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from LP, signed by Beatrice Wulf, to George W. Josten, Pasadena City College, cc: Mr. Simon, RE: Thanks him for his not to Mr. Freeman about the definition of pH in his textbooks. [Filed under AHP Organizational Correspondence M-Z: Box 1.008, Folder 8.2]
• Memo from LP to Ava Helen Pauling RE: LP suggests that in her effort to raise money for the senate campaign of Henry Reuss, who is opposing McCarthy, she send donations to the committee to elect Reuss.

• AHP writes cheque: to: Dr. Frank L. Adams amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Manor Market amount: $50.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 1-16: New York Times and unknown newspaper clipping articles entitled "Canadians Banned by U.S. Lose Jobs," "Dr. Melish Gives his 'Last' Sermon" and "6 Toronto Musicians U.S. Bans Lose Jobs" RE: as a result of the McCarran Act such events were occurring at the time. [Filed under LP Biographical: Box 2.002, Folder 2.7]
• Letter from Dr. Louis B. Wright to LP RE: discusses the matter of sabbatical for Henry Moe, for what seems like a plan to get him involved in a project of LP's. [Letter from LP to Dr. Wright May 23, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from Elizabeth Hastings, W.H. Freeman and Company, to LP . RE: Hastings thanks LP for his note of May 22, and says that Freeman will no doubt be writing soon. [Filed under LP Manuscripts of Books, 1947b6.2]
• Letter from LP to Dr. E DeRobertis RE: writes that he is glad to hear of Mr. Franchi's fellowship grant and would be pleased to have him at Caltech. If he has a doctorate degree then Caltech can host him as a guest, however, if he is only a graduate student, then he will need to apply into Caltech's graduate program. An application form is being sent to him. [Letter from Dr. E DeRobertis to LP May 7, 1952] [Filed under F: Correspondence 1952, Box #128, Folder #17]
• Letter from Mrs. Ethel B. Socolar for the Program Committee of the Faculty-Graduate Committee for Peace to LP RE: discusses the fact that though in LP's letter of April 2, 1952 he indicated his inability to speak for them due to a plan to go abroad, it is now clear that those plans are now obsolete and so she wonders if LP might now be able to speak at their gathering in July or August. [Letter of response from LP to Mrs. Socolar July 21, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Pauling Scrapbook: Cleveland Press article entitled "Noted Chemist Talks Here, Doctors Invited" RE: slates LP's talks scheduled for May 28, 1952 and May 29, 1952 at Cleveland Clinic, entitled "Biological Specificity" and "Structure of Proteins." [Filed under LP Biographical: Box 6.006, Folder 6.24]
• Speech by LP on Biological Specificity, The Cleveland Clinic, Cleveland, Ohio. [Filed under LP Speeches: 1952s.8]

• LP Biographical Political: Passport Problems, May 17-31: Letter from Henry Allen Moe of the John Simon Guggenheim Memorial Foundation to LP RE: sends a copy of an editorial from the Boston Daily Globe to LP. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: Letter from LP to Dr. John Michael O'Gorman RE: thanks him for his letter and clipping from the Washington Post. Sends five documents about his passport matter. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: Letter from LP to Dr. Louis B. Wright of Folger Shakespeare Library RE: encloses some documents relating to his passport troubles. Asks Dr. Wright to write to the President or the Secretary of State on his behalf [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: Letter from LP to Lt. E. Miles Day RE: sends thanks in response to his letter in which he takes action in connection with the refusal of a passport to LP. Goes on to give his own opinions about the situation. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: Letter from LP to Mr. Bern Dibner, President of the Burndy Engineering Co., RE: thanks him for the May 21, 1952 letter and NY Times clipping. Goes on to describe his reasons for agreeing to be nominated for vice-president of the World Federation of Scientific Workers. Is disturbed by the slowing down of work on the problem of proteins. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: Letter from LP to Prof. J. W. Williams of the Dept. of Chemistry, U. of Wisconsin RE: encloses copies of his letters to Pres. Truman and the Secretary of State. Asks Prof. Williams to write in support of his application for a passport [Letter from Prof. Williams to LP May 20, 1952]. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP flies from Cleveland to Chicago and on to Los Angeles.
• Letter from Charles Newton on behalf of the Office of the President, Caltech, to LP RE: Thanks LP and other participants in the filming of a movie about Caltech for high school students that was supervised by DuBridge and Frank Capra. [Filed under: LP Biographical, Box 1.030, Folder 30.3]
• Letter from Dr. Dorothy Hodgkin to LP RE: thanks her for her note May 3 and writes that he does not think there is anything she can do about his passport problems. Mentions that he has applied for a passport to England again in the hopes of attending the Faraday Society meeting. [Letter from LP to Dr. Hodgkin April 22, 1952] [Filed under LP Correspondence: Box #159, Folder #12 (The Lalor Foundation; Dorothy Hodgkin)].
• Letter from Kathleen Lonsdale to LP RE: writes that she sent a document of LP's relating to his passport difficulties to a Mr. Gale, editor of Nature, with the suggestion that he write an editorial about the MacCarron Act. Summarizes his reply in her letter to LP. Suggests that LP write him a letter. [Letter from LP to Dr. Kathleen Lonsdale June 4, 1952] [Filed under LP Correspondence: Box #218, Folder #2 (Lonsdale, Kathleen)].
• Letter from LP [signed in his absence by BW] to Mr. Arthur M. Churchill, Chairman of the Parents' Committee of Reed College RE: Encloses a check for $50 and is glad to serve on the sponsoring committee of parents during the coming year. [Letter from Mr. Churchill to LP May 9, 1952].
• Letter from LP [signed in his absence by Beatrice Wulf] to Joe Capsin RE: Thanks Joe for his letter of May 19, 1952 as well as the enclosed letter from Dr. Larsen. Also sends copies of his recent letters to the President and the Secretary of State. [Letter from Joe Capsin to LP June 1, 1952] [Filed under LP Correspondence: Box #57, Folder #9].
• Letter from LP to Charles Goodeve, RE: LP thanks Goodeve for the invitation to contribute a paper on the physical aspects of proteins at Cambridge in August. LP suggests that he present a short talk with the title “The Forces Operating between Polypeptide Chains.” LP is not sure if he will be granted a passport. LP is enclosing two copies of his letters to the Secretary of State and the President in which LP asks that a passport be issued to him. [Reply from F.C. Tompkins June 10, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.10]
• Letter from LP to Dr. C. V. Tondo RE: in response to Dr. Tondo's letter of enquiry, LP gives his opinion about whether or not there would be significant differences in the ultraviolet absorption spectrum of the three different types of virus of foot and mouth disease. [Letter from Dr. Tondo to LP May 15, 1952] [Filed under LP Correspondence: Box #410, Folder #17].
• Letter from LP to Dr. Henry A. Lardy RE: thanks him for his letter. Agrees that McCarthy is in part responsible for his situation and is glad that Reuss is planning to run against him. Sends a check for $10 in support for the campaign. [Filed under L: Correspondence 1952, Box #230, Folder #18]
• Letter from LP to Mr. Charles Milton RE: thanks him for his letter of May 16, 1952 and the enclosed clipping. [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from LP to President DuBridge RE: rather than $1500.00 per year going to the Teachers Insurance and Annuity Association directly, LP prefers the money to be added into his direct salary. [Filed under: LP Biographical, Box 1.030, Folder 30.3]
• Letter from LP to Professor J. Timmermans, RE: LP is pleased to accept the invitation to come to Brussels in April for the Ninth Triennial Council on the Study of Proteins hosted by the Institut International de Chimie Solvay. [Timmermans’ letter May 15, 1952] [Timmermans’ reply July 4, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1953), Box 1953s, Folder 1953s.4]
• Letter from LP to the Board of Trustees, Cedars of Lebanon Hospital. [Related letter from Lippman to LP May 9, 1952]. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)]

  29 May 1952

  Board of Trustees

  Cedars of Lebanon Hospital

  4833 Fountain Avenue

  Los Angeles 29, California

  Gentlemen:

  I have been informed by Dr. Richard W. Lippman that the grants from the United States Public Health Service for support of his work, which are officially administered by you, I understand, are, because of your action, no longer available to him, and that his work in the field of medical research, especially on the kidney, is accordingly hampered. I am writing to ask that you investigate this matter, and arrange that the research grants for support of his work be made available to him.

  I wish to point out that your action is interfering also with the work in the field of medical research that is being carried out in the Gates and Crellin Laboratories of Chemistry of the California Institute of Technology. Dr. Lippman has been collaborating with some of our staff members, and this collaboration has led to the publication of some joint papers. The joint work that is being carried out includes the study of the effect of concentration of protein on the electrophoretic mobility of serum proteins, being done in collaboration with Jay Banovitz of the California Institute of Technology; the exploration of fractionation of Oxypolygelatin as a means of overcoming the proteinuria that has been observed to follow the administration of this blood substitute, which was developed at the California Institute of Technology and is still under study at this Institute, with the support of funds from the Public Health Service and the Office of the Surgeon General of the Army; the study, by Dr. Lippman and Professor Dan H. Campbell, of methods of altering kidney tissue to make this tissue auto-antigenic - this is a method of investigation that seems to promise significant results in the study of nephritis; the continued study of nephritis produced by the injection in rats of nephrotoxic globulin, involving collaboration between Dr. Lippman and Professor Campbell and Mr. Banovitz; the collaborative investigation, by Dr. Lippman and myself, of the theory of the factors involved in the interpretation of measurements of renal clearance.

  I myself have a special interest in the field of the physiology of the kidney and the nature and treatment of nephritis. It is my opinion that Dr. Lippman is the outstanding worker in this field of medical re-

  Board of Trustees Cedars of Lebanon Hospital Page 2 29 May 1952

  search in the western United States, and I trust that you will give serious consideration to the question of eliminating the factors that are at present a hindrance to his work.

  Sincerely yours,

  Linus Pauling:W

• Letter from Linus Pauling to President DuBridge RE: returning a donation from Lt. Day that was offered to help in passport issue. Discusses the possible involvement of the ACLU if Caltech were to take the passport issue to court, but LP concedes that he is reapplying for a passport and plans to travel to England in July/August. [Filed under: LP Biographical, Box 1.030, Folder 30.3]
• Letter from Senator Hubert H. Humphrey to LP RE: thanks LP for his previous letter and asks that he keep him informed about his application for a passport. Mentions his own involvement in the legislative struggle to prevent the McCarran bill from becoming law. [previous letter from LP to Senator Humphrey May 23, 1952] [Filed under LP Correspondence: Box #163, Folder #5].
• Speech by LP on Molecular Structure of Proteins, The Cleveland Clinic, Cleveland, Ohio. [Filed under LP Speeches: 1952s.8]

• AHP writes cheque: to: Sue Perry amount: $30.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical Political: Passport Problems, May 17-31: Note from Harold F. Walton to LP written on a Letter [cc: LP] from Harold F. Walton to The Editor of Chemical and Engineering News [RE: writes about his distress in reading that LP's passport has been withheld from him. Asks if the American Chemical Society could make an official representation on LP's behalf.] note at bottom of letter RE: thinks his own letter is too mild. Comments on the injustice of LP's treatment. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: copy of Newsletter for the Federation of American Scientists RE: article entitled "Damage from US Travel Restrictions." Sub-head: "Pauling Applies Again for Passport." [Filed under: LP Biographical 2.002, Folder 2.8]
• Letter from Charles Goodeve of the Faraday Society to LP RE: reminds LP that he is asked to give a paper at the August meeting of the Faraday Society in Cambridge. Unfortunately, he will not be present, and thus hopes that they will be able to meet later around the 18th of August. [Letter of response from LP to Mr. Goodeve June 17, 1952] [Filed under G: Correspondence 1952, Box #140, Folder #16]
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation, to LP RE: LP defends his involvement with the World Federation of Scientific Workers since Moe cited this as one possible reason for LP's not being allowed to travel to Europe. [In response to letter from Moe to LP May 23, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].

• LP Biographical Political: Passport Problems, May 17-31: Letter cc: LP from M. Phillips, Secretary to Mr. Dean Acheson, Secretary of State, RE: makes a general statement for the American Association of Scientific Workers disfavoring the practice of denying passports for legitimate travel abroad. Brings up LP's case as an illuminating example. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Biographical Political: Passport Problems, May 17-31: copy of notes from the World Federation of Scientific Workers, Eleventh Meeting of the Executive Council of the WFSW, Vienna RE: discusses the meeting: who spoke, and on what topics. [Filed under: LP Biographical 2.002, Folder 2.8]
• LP Newspaper Clippings: 1952n. Article in The Christian Science Monitor titled "Chemist Makes Another Try for Visa." Tells how, after being denied a passport earlier in the year to attend a conference by the Royal Chemical Society in England, LP is trying again for a passport, this time to attend a conference on protein structure put on by the Faraday Society at Cambridge.
• Letter from Dr. P. O. Bastiansen to LP RE: Thanks LP for his letter and comments on his enclosures regarding LP's visa and passport problems. Mentions Robert Major, Director of the Norges Teknisk-Naturvitenskapelige Forskningsrad organization. Writes a summary of one of his speeches at the organization's meeting. [Letter from LP to Dr. Bastiansen May 21, 1952, letter of response from LP to Dr. Bastiansen June 10, 1952] [Filed under LP Correspondence: Box #24, Folder #3].
• Letter from Rene Wurmser of the University of Paris to LP RE: [Written in French]. Discusses a meeting of the International Congress of Biochemistry that is being planned for July 21, 1952 through July 27, 1952 in Paris. [Reply from LP to Wurmser June 3, 1952]. [Filed under LP Speeches: 1952s.9].
• Letter from Rene Wurmsur to LP, RE: [In French] Wurmsur invites LP to the International Congress on Biochemistry to be held in Paris July 21-27th. Wurmsur would be honored if LP would accept the position of President of Honor of the Colloquium. Wurmsur is sending LP a tentative program for the Congress and hopes that LP will respond soon. [LP’s reply June 3, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.9]