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• 1952 Form 1099 from W.H. Freeman and Co., lists LP's payments and royalties from them as $12,538.73. [LP Biographical: Business and Financial Box 4.001, Folder 1.6]
• 1952 W-2 Form from California Institute of Technology that lists total wages paid by Caltech to LP as $14,500.08. [LP Biographical: Business and Financial Box 4.001, Folder 1.6]
• 1952 W-2 form to LP from the Executive Office of the President, The White House Office. Total wages are $50.00. [LP Biographical: Business and Financial Box 4.001, Folder 1.6]
• Article from Popular Mechanics Magazine "Popular Mechanics Fiftieth Anniversary Hall of Fame: 1902-1952," honors 50 men of great achievement including LP. A photo and description of their work is included. [LP Newspaper Clippings: 1952n.]
• California Individual Income Tax Return for the year 1952. Lists LP's total income as $26,662.74. Lists the income from "Book and patent royalties" as $15,292.86. Under "Miscellaneous," LP writes "Bad debt. Judgement of $1800 was [illegible]me against J.B. Nottingham, who went bankrupt after paying 175," and the deduction claimed is for the remaining $1625.00. [LP Biographical: Business and Financial Box 4.001, Folder 1.6]
• Handwritten notes detailing 1952 tax information. Lists organizations LP donated money to: World Student Service Fund ($5.00), Barrett Cancer Fund ($20.00), Iron Curtain Refuge Camp ($10.00), Reed College ($50.00), YMCA ($10.00). Lists Professional Societies LP was a member of: ACS, American Crystallography Association, International Society of Hematologists, AAScW, Sigma Xi, Alum U of N.B., Fed. Am Sci, Nature, Acad. Prof Sci, Faraday Society, Am Phys Soc, AAAB, Am Acad. Arts and Sci, Nat Acad. Sci, Caltech alumni, AAUP. Lists various business expenses. Included is a handwritten note title "Schedule F:" that explains why deductions were taken on trips to support research and promotion for textbook authoring. Lists charities given to, and the total amount given as $252.50. [LP Biographical: Business and Financial Box 4.001, Folder 1.6]
• Issue of The Vortex: Bulletin of the California Section of the American Chemical Society with LP on the cover as the winner of the Gilbert Newton Lewis Medal. [LP Newspaper Clippings: 1952n.]
• Notes, diagrams, and photos on the structure of proteins. [no date; written in German] [LP Science: Box 6.002, Folder 2.24]
• Pamphlet: "To Secure Justice in the Rosenberg Case," William A. Reuben, National Committee to Secure Justice in the Rosenberg Case. [LP Biographical: Political Box 2.044, Folder 44.9.]
• Pauling Scrapbook: Scalacs (Regional Bulletin of the Southern California Section American Chemical Society) articles entitled "Chemists of the Future" and "Social News" RE: discussing LP's talk on Recent advances in the theories of the Chemical Bond, as well as his receiving the Gilbert Newton Lewis Medal of the California Section of the American Chemical Society. [pp.19, 23] [Filed under LP Biographical: Box 6.006, Folder 6.18]
• Pauling Scrapbook: The Vortex (Bulletin of the California Section of the American Chemical Society) [only outside cover still intact in scrapbook] [picture of LP on cover]. [Filed under LP Biographical: Box 6.006, Folder 6.18]
• Reprint, “Bond Orbitals and Bond Energy in Elementary Phosphorus,” The Journal of Chemical Physics. [Filed under LP Reprints: (Publications of Linus Pauling, 1952), Box 1952p, Folder 1952p.1]
• Reprint, “Configurations of Polypeptide Chains with Equivalent Cis Amide Groups,” Proceedings of the National Academy of Sciences. [Filed under LP Reprints: (Publications of Linus Pauling, 1952), Box 1952p, Folder 1952p.3]
• Reprint, “Gilbert Newton Lewis Medal Acceptance by Linus C. Pauling,” The Vortex. [American Chemical Society, Northern California Section] 13 (January 1952): 21, 26, 28-29. [Filed under LP Reprints: (Publications of Linus Pauling, 1952), Box 1952p, Folder 1952p.24]
• Reprint, “The Structure of Alloys of Lead and Thallium,” Acta Crystallographica. [Filed under LP Reprints: (Publications of Linus Pauling, 1952), Box 1952p, Folder 1952p.2]
• Royalty Statement from W.H. Freeman and Company, total Royalties are $12533.00 for the dates July 1, 1951 to June 30, 1952. [LP Biographical: Business and Financial Box 4.045, Folder 45.1]
• Telegram from LP to F.H. Soward, RE: LP is glad to accept the invitation to speak to the Canadian Club on February 15th. The topic of LP’s talk will be “The Value of Fundamental Science.” [Letter from Soward to LP January 18, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Travel Schedule for LP and AHP for 1952. Includes two handwritten pages outlining the whole year. Also included are eight typed pages and three hand-written pages giving the itineraries for various trips, which generally span 1-2 months.

• Pauling Scrapbook: Pasadena (California) Star News article entitled "Caltech Keeps Digging Into 'World of Unknown.'" RE: Discusses the work done at Caltech, in particular LP / Dr. Corey's discovery of the structure of proteins [picture of Dr. Corey with crystal diffraction machine]. [Filed under LP Biographical: Box 6.006, Folder 6.19]

• AHP writes cheque: to: H.C. Hotaling and Co. amount: $33.02 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Pasadena Pool Maintenance Co. amount: $50.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Sue Perry amount: $7.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP Biographical: Personal and Family: Postcard from a family that Peter Pauling [LP's son] stayed with over Christmas to LP and AHP telling them that they enjoyed meeting Peter and having him with them over the holiday. [Filed under LP Biographical: Box 5.041, Folder 41.5]
• Letter from Dave Shoemaker of MIT to LP RE: encloses a copy of a letter from himself to Dr. Tucker, Jr. and a draft of his latest correction. Writes of a conference on neutron diffraction that he recently attended, in particular a paper presented by Dr. Shull on the determination of magnetic moments of atoms in a metal by analysis of the magnetic scattering of neutrons. [copy of letter from Dr. Shoemaker to Dr. Tucker, Jr. included] [Letter from LP to Dr. David Shoemaker January 11, 1952] [Filed under LP Correspondence: Box #363, Folder #3: File (Shoemaker, David and Clara 1942-1995)].
• Letter from George G. Wright to LP RE: requests LP's advice about whether he is qualified enough to apply for a Guggenheim Fellowship, as he is interested in studying respiratory enzymes. [Letter from LP to Dr. Wright January 10, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from LP to F.C. Lindvall RE: Request that a statement be drawn up for Donald Mare, Lt. Colonel, USAF in regard to the nature of the Contracts Committee at Caltech and how the classified clearance of some members on the committee would be beneficial.
• Letter from W. Lotmar to LP RE: Writes in response to LP's letter of November 19, 1951 regarding "the correct b axis value of the muscle diagram." Writes down some statements from his protocols of 1942 in order to avoid any misunderstanding. Also writes that he is interested to learn what has come out of the fibrin diagram of Rudall. [Letters from LP to Lotmar November 19, 1951, January 9, 1952] [Filed under L: Correspondence 1952, Box #230, Folder #18]
• Letter from W.H. Freeman, W.H. Freeman and Co., to LP . RE: Freeman thinks that LP's schedule will be satisfactory. He plans to publish the book as soon after 1, Janu as possible. [Filed under LP Books, 1953b.1]
• Letter from W.H. Freeman, W.H. Freeman and Company, to LP RE: Discusses the delivery date of the manuscripts for the revised edition of General Chemistry. Advises LP to get the manuscript to them no later than late September. Also mentions that a large amount of criticism was received regarding the problem sets, which were said to be poorly graded and not very clear. [Letter from LP to Freeman December 26, 1951]. [Filed under LP Books: Box 1953b, Folder 1953b.1].
• Research Notebooks of LP, RNB 14 RE: length and weight notes on data gathered on the Byssal threads of the Mytilus edulis sea mussel. Includes diagram of the mussel. [loose sheet tucked into p.62] [see January 5, 1952 for additional info]
• Research Notebooks of LP, RNB 14 RE: notes regarding Crystallized Muscle with drawing of Byssal threads. Various lines of data on Mytilus [a genus of marine bivalve shells, including the common mussel] edulis in sea water [p.57] [see January 3, 1952 for further info.]

• AHP writes cheque: to: Peter Pauling amount: $15.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from LP to Conway Pierce, RE: LP looks forward to speaking before the San Gorgonio Section on January 11th. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.1]
• Letter from LP to Dr. B.D. Van Evera RE: Thanks Dr. Van Evera for the last letter that indicated that something was being done for Dr. Stephen Brunauer. Says that Brunauer sent him some information about his case. Encloses a copy of the petition for Dr. Brunauer's case. [Letter from Van Evera to LP December 27, 1951] [Filed under LP Correspondence: Box #32, Folder #6 (Brunauer)].
• Letter from LP to Mr. David C. Crockett, Massachusetts General Hospital, RE: Writes that his term as a member of the Scientific Advisory Committee is coming to a close and that he has enjoyed getting acquainted with him. [Filed under LP Science: Box 15.008, Folder 8.4]
• Letter from LP to Professor Conway Pierce, Pomona College, RE: LP is speaking before the San Gorgonio Section on January 11, 1952. He and AHP will arrive at Pierce's house at 5:00PM. [Letter from Pierce to LP December 27, 1951] [Filed under LP Speeches: 1952s.1].
• Letter from W.H. Freeman, W.H. Freeman and Co., to LP . RE: Freeman has some editorial questions for LP regarding texts in the chemistry series. [Filed under LP Manuscripts of Books, 1947b6.2]
• Letter from William S. Klein to LP RE: Writes that he is interested in Balmer's equation, and that the study now yields an atomic concept consistent with classical physics. Goes on to describe the approach to the problem. Asks to meet with LP if he is interested in the subject. [Letter from LP to Klein January 9, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Research Notebooks of LP, RNB 14 RE: Various notes of data on Mytilus sea mussel under the main heading "Crystallized Muscle" [p.58] [see January 2, 1952 for previous info., see January 5, 1952 for further info.]
• Telegram from LP to N.A.M. MacKenzie RE: LP is pleased to accept the invitation and suggests the dates of February 13th through the 17th. [Letter from MacKenzie to LP January 4, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]

• Letter from G. B. Kistiakowsky to LP RE: Writes a letter of recommendation for Robert Gromer. [Letter from LP to Prof. G.B. Kistiakowsky January 10, 1952] [Filed under LP Correspondence: Box #198, Folder #14 (Kistiakowsky, George B.)].
• Letter from Henry Allen Moe, John Simon Guggenheim Memorial Foundation, to LP RE: Asks if LP could recommend a biologist named Hardin for a fellowship. [Letter from LP to Moe January 10, 1952]. [Filed Under LP Science: Box 14.014, Folder 14.7].
• Letter from J. C. McGowan to LP RE: Writes that in the past he sent LP reprints of two articles of his on the strengths of acids. He now encloses a reprint of an article on the strengths of bases and another reprint of interest. [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Letter from J.G. Hooley to LP RE: The University of British Columbia is pleased to have LP coming to visit. Hooley is in charge of organizing LP’s visit and will keep LP informed of details and events. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from LP to Ben R. Meyer, Chairman, Board of Trustees, Cedars of Lebanon Hospital, RE: Reprimands the Board of Trustees for the firing of three physicians from the Cedars of Lebanon Hospital. One, Dr. Richard Lippman, is LP's personal doctor. The reason for firing was their political views, which did not agree with the members of the board. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].
• Letter from LP to J.G. Hooley, RE: LP looks forward to going to Vancouver at the invitation of the Canadian Club and the Department of Chemistry at the University of British Columbia. LP suggests February 13th through the 17th as dates for his trip. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from LP to N.A.M. MacKenzie, RE: LP is pleased to have been invited to come to the University of British Columbia to deliver a lecture sponsored by the Canadian Club. LP suggests February 13th through the 17th as dates for his visit. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from Lt. Colonel Donald Mare to A.L. Wirin. [LP Safe: Box 2.021, Folder 21.23]
• Letter from N.A.M. MacKenzie to LP, RE: MacKenzie is pleased to have LP visit the University of British Columbia from the 13th through the 17th of February. MacKenzie will have J.G. Hooley arrange the details of LP’s visit. [Telegram from LP January 3, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Proposal for the extension of a contract with the Office of Naval Research (ONR) on the structure of metals and intermetallic compounds. [Handwritten editorial notes by LP] [Filed under LP Science: Box 14.031, Folder 31.2.]
• Research Notebooks of LP, RNB 14 RE: data on scallops and their shell-closing muscles, under the main heading "Crystallized Muscle" Includes drawing of Rhinites. [p.60] [see January 5, 1952 for previous info., see January 5, 1952 for further info as well]

• AHP writes cheque: to: Manor Market amount: $50.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Pasadena Laundry and Dry Cleaners amount: $10.88 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Walter Fritts amount: $22.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from A.L. Wirin to Joseph C. Keeley. [LP Safe: Box 2.021, Folder 21.23]
• Letter from LP to Dr. Floyd E. Rowland. [Filed under LP: Correspondence 1953]

  5 January 1952

  Dr. Floyd E. Rowland

  Boston Naval Yard

  Building 58

  Charleston, Massachusetts

  Dear Doc:

  I have not known your address in recent years. However, I have just seen it in the booklet on the Department of Chemistry of the University of Illinois, which contains a list of all Ph.D.'s from the Department, and I am writing to give you some of the news, and to find out how you are getting along.

  It is nearly twelve years since I saw you last. You remember that I was ill at the tine. It turned out that the illness was a very serious one - Bright's disease - and it took me a good while to get back into shape again, I have been feeling fine now, probably as the result of my sticking closely to the diet and prescribed regime generally.

  Our eldest son, Linus Jr., was in the Boston region for three years, as a student at Harvard Medical School. He got his M.D. last June, and is now interning in the Queen's Hospital in Honolulu. He is married, and has three small boys. Our other children are not married. Peter is a graduate student at Cambridge, England, and Linda is a junior at Reed College. The youngest boy is in high school.

  My work keeps me very busy. I have been giving, the freshman lectures since 1937, and a graduate course every year in addition. At present my research deals largely with the structure of proteins and of nucleic acid. Our Department of Chemistry is moderately large, but things go along smoothly here.

  I see Paul Emmett about once a year. Within the last few years I have also seen Milton Harris, Oz Helmer, Orlando Romig, and one or two others.

  Ava Helen and I spent two months in France and England last summer. We were in Paris for seventeen days, and then we rented a car and drove around England and Scotland for one month. We spent nearly a year in Europe four years ago, when I served as Eastman Professor at Oxford.

  I have been invited to participate in the Ninth Solvay Congress in Brussels next April, and I am planning to present a report

  Dr. Rowland Page 2 5/1/53

  on the present status of the problem of determining the structure of proteins.

  Please let me know what you are doing now and how you are getting along. Do you ever see any of the boys from Corvallis?

  Sincerely yours,

  Linus Pauling:W

  P.S. I see that I am acquainted with some of the people who were at Illinois with you, including Eugene Geiling, Edward Wichers, Ernest Volwiler, Otto Smith, Allen Stearn, and Carl Marvel. L.P.

• Letter from LP to Dr. George E. Burch, Tule University Medical School, RE: Writes that he and Dr. Itano are interested to know of the progress of Dr. Burch's clinical test of the nitrate treatment for sickle cell anemia. Mentions his work with Dr. Corey on the structure of nucleic acid. [Letter from LP to Burch February 8, 1952] [Filed under LP Correspondence: Box #33, Folder #8].
• Pauling Scrapbook: Ontario (California) Report article entitled "Dr. Pauling to Address Chemical Society Meeting" RE: reports that LP will speak on "The Structure of Proteins" to the San Gorgonio section of the American Chemical Society. [Filed under LP Biographical: Box 6.006, Folder 6.19]
• Research Notebooks of LP, RNB 14 RE: data on the Mytilus sea mussel having to do specifically with the Posterior byssal retractor, under the main heading "Crystallized Muscle" [p.59] [see January 3, 1952 for previous info., see January 4, 1952 for further info.]
• Research Notebooks of LP, RNB 14 RE: length and weight data recorded with Dr. Tyler on the Sea Cucumber and its muscles under the main heading "Crystallized Muscles" [p.61] [see January 4, 1952 for previous info., see January 2, 1952 for further loose sheet notes]
• Research Notebooks of LP, RNB 14 RE: sheet of notes on the sea cucumber [loose sheet of notes tucked in p.62] [see January 2, 1952 for previous info.].

• Letter from Jill Brown, secretary to Professor Todd, Cambridge University, to LP RE: Notifies LP that his December 19, 1951 letter to Todd has arrived, but Todd is absent until February. [Filed under LP Science: Box 9.001, Folder 1.3].
• Letter from LP to Dr. Melba Phillips RE: Writes that he is concerned that some action might be taken against Dr. Phillips in respect to a note of Dr. Hewitt's letter, listing "Dr. Phillip's case" for discussion in St. Louis. Wants Dr. Phillips to let him know if he can help out in any way. [Letter from Phillips to LP January 5, 1953]. [Filed under LP Correspondence: Box #312, Folder #17].

• Letter from LP to Dr. I.Y. Olch, Chief of Staff, Cedars of Lebanon Hospital, RE: Regrets to hear of Dr. Lippman's removal from the hospital staff, and the fact that it was for political reasons. [Letter from LP to Meyer January 4, 1952]. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].
• Letter from Eric Ponder, Nassau Hospital, to LP RE: Writes about the results of some of his experiments involving sickle cell anemia before publishing the results in the Comptes Rendus. [Letter from LP to Ponder January 16, 1953] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from Irvin Fuhr, National Institutes of Health, to LP RE: Notification that his research grant expires on September 30, 1952, and gives renewal instructions. [Filed under LP Science: Box 14.041, Folder 41.2].
• Letter from John E. Leonard to LP. [Filed under LP Science: Box 6.001, Folder 1.13].

  In the interpretation of the Lotman-Picken photograph of muscle it would be helpful to be able to estimate with confidence the relative quantities of the materials responsible for the α-keratin portion and the crystalline portion of the observed x-ray scattering.

  As a possible practical approach to this problem I have prepared a photograph of a horsehair to which are attached three very fine, needle-like crystals of urea. The urea crystals were so long that they extended beyond the x-ray beam in both directions along the fiber. Since the density of urea (1.335) is close to that of the density expected for horsehair (about 1.3), the relative amounts of urea and horsehair in the beam could be taken as proportional to their respective cross sections. These respective cross sections, as calculated from measurements of the hair and the crystals with a micrometer eyepiece, were found to be in the following ratio:

  cross section of crystals = 0.0029 mm.² = 0.05

  cross section of hair 0.06 mm.²

  [Data Equation]

  Maximum error of measurement, 10%

  The attached photograph was made by rotating the combined sample in a beam of copper radiation; sample to film distance, approximately 3.25 cm. A flat-film Unicam camera was used.

  It is interesting, although perhaps not significant, to note that Bloor ("Biochemistry of the Fatty Acids", p.200) lists the following data on the composition of dry muscle tissue.

  [Data Table]

  John E.

• Letter from K.M. Rudall, Department of Biomolecular Structure, U. of Leeds, to LP RE: Writes that he sends some photographs of the fibrin material. Thanks LP for reprints of a series of papers on proteins. [Letters from LP and Randall June 11, 1951, January 9, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Dr. Fernandez, Caltech. [Filed under LP Manuscripts and Articles: 1952a.1]

  Jan. 7, 1952

  To: Dr. Fernandez

  From: Linus Pauling

  Subject: Proposed investigation of electronic structure of phosphorus pentachloride

  I think that the work that you have been carrying out on the electric dipole moments of halogen derivatives of methane is not interesting enough to justify your continuing with it. I suggest instead that you carry out some calculations on the electronic structure of molecules such as phosphorus pentachloride.

  Phosphorus pentachloride has the configuration of a trigonal bipyramid. According to an unpublished investigation by Schomaker, the two axial chlorine atoms are 2.11 Å. from the phosphorus atom, and the other three chlorine atoms, in equatorial positions, are 2.04 Å. from the phosphorus atom. Rouault at first gave the values 2.25 and 2.10 Å. for these distances, and then, after the publication of Schomaker's values in the Nature of the Chemical Bond, he reported 2.07 and 2.01 Å.

  I think that some theoretical work on PCl₅ has been reported, but I do not have the references at hand. I suggest that you look through the literature, especially the Journal of Chemical Physics for the last few years, to see what you can find about orbitals for the trigonal bipyramid.

  In the Nature of the Chemical Bond the statement is made that the phosphorus atom can form 5 covalent bonds, in these atoms, by the use of 1 3d orbital. I suggest that an investigation of the electronic structure of PCl₅ be made, by methods somewhat similar to those used by Dr. Simonetta in the paper on bond orbitals and bond energy in elementary phosphorus. An outline of the proposed calculations is given in the following paragraphs.

  Let us assume first that the 5 bonds are pure covalent bonds, formed with use of one 3d orbital. The problem is then to find the best sp³d orbitals that can be formed. It is necessary that the orbitals be orthogonal to one another, and we define as the best orbitals the orbitals that make the bond energy for the molecule a maximum. We assume that the bond energy for a P-Cl bond is proportional to the product of the strength S of the chlorine bond orbital and the strength of the phosphorus bond orbital. The strength of the chlorine bond orbital is assumed to be constant; hence our problem is to find the set of 5 orthogonal sp³d orbitals for which the sum of the strengths in the respective bond directions (toward the corners of the trigonal bipyramid) is a maximum. I suggest that you solve this problem first, in case that it has not already been solved and reported in the literature. If you find that it has been reported in the literature, please check the calculations.

  It will be interesting to see whether or not the two kinds of bond orbitals for the phosphorus atom, as determined by this treatment, differ in their bond strengths, and especially whether they differ in such a way that the three equatorial bond orbitals are better than the two axial ones. Next, we must consider the partial ionic character of the phosphorus-chlorine bonds. Phosphorus has electronegativity 2.1, the same as hydrogen, and accordingly we predict about the same amount of partial ionic character for the phosphorus-chlorine bond as for the hydrogen-chlorine bond. The latter is indicated by the electric dipole moment of hydrogen chloride to be 17% If we assume that there is synchronism in the achievement of partial ionic character by the 5 bonds, each having the ionic aspect P⁺-Cl^- 17% of the time, the five ionic structures of the sort Cl-Cl-P⁺-Cl-Cl Cl^- make a total contribution of 85%, leaving only 15% for the completely covalent structure. It is, of course, possible that the amount of partial ionic character is somewhat greater, and that the completely covalent structure makes a still smaller contribution than 15%. In any case, it is clearly important to investigate the configurations of the phosphorus atom in which 4 covalent bonds and 1 ionic bond are formed.

  I suggest that as your second job in the attack on the problem you discuss the nature of the best bond orbitals that can be formed by a phosphorus atom in this situation. There are two structures to be considered. The first is that in which one of the axial bonds is ionic, and the second is that in which one of the equatorial bonds is ionic. The first problem is to be tackled by essentially the same methods as that used by Simonetta in the discussion of the P₄ molecule. Equations are to be formulated for three equivalent equatorial bond orbitals, projecting approximately in the directions of the three equatorial chlorine atoms, and a fourth axial bond orbital, extending in the positive direction of the z axis. I think that the discussion on page 6 of the elementary phosphorus manuscript relates to the three bond orbitals, which together have the symmetry given by a three-fold axis, the z axis. You need in addition a fourth orbital of the spd type that is orthogonal to each of these three. You are then to evaluate the strength of each of the three orbitals in the direction of its respective equatorial chlorine atom, and the strength of the fourth orbital in the direction of the positive z axis. It might be interesting for you to maximize the sum of these four bond strengths, without consideration of the energy of promotion of an electron from the s or p orbital to the d orbital. The actual problem, however, is to minimize the energy for the phosphorus atom with consideration both of the bond energy and of the promotional energy. The secular equation given on page 7 of the manuscript is not the correct one for you to use. I suggest that you set up the expression for the total energy of the molecule, including bond energy and promotional energy, on the assumption that there are three equatorial covalent bonds and one axial covalent bond, and then minimize the total energy with respect to all of the parameters.

  In setting up the energy for the molecule you may make use of the atomic energy values given on page 5 of the manuscript; namely, you may assume that the energy of promotion of a 3s electron to a 3p orbital is 194 kcal/mole^-1 and that the energy of promotion of a 3p electron to a 3d orbital is also 194 kcal mole^-1.

  In addition you need to make some assumption about the phosphorus-chlorine bond energy. The energy of a normal phosphorus-phosphorus bond is given in the manuscript as 51.6 kcal mole^-1 (please check this value with the published paper - perhaps a change has been made). The chlorine bond energy, in Cl₂, is 57.8. The average of these two is 54.7 kcal mole^-1, which can be taken as the normal covalent bond energy for these two atoms. The strength of a normal phosphorus bond orbital is given on page 7 of the manuscript as 2.118. Hence the energy of a phosphorus-chlorine bond can be taken as 25.9 S kcal mole^-1, where S is the strength of the phosphorus bond orbital in the direction of the bond; that is, in the direction of the line from the phosphorus nucleus to the chlorine nucleus.

  After you have solved this problem, the next calculation to be made is the same one for the case that two covalent bonds are formed to the two axial chlorine atoms, and two covalent bonds to two of the three equatorial chlorine atoms. This calculation is to be carried out in the same way as the preceding one.

  The ionic aspect of the phosphorus pentachloride molecule may now be represented approximately by five ionic functions, with equal weight; these are tow functions of the first kind, in which there is an ionic bond to one of the two axial chlorine atoms, and three functions of the second kind, in which there is an ionic bond to one of the three equatorial chlorine atoms. If the average strength of the covalent bonds to an axial chlorine atom turns out to be less than the average strength of the covalent bonds to an equatorial chlorine atom, as given by this calculation, we may consider that the difference in phosphorus-chlorine distance reported by Professor Schomaker, and also by Rouault, has been given a theoretical explanation. It might even be possible to discuss the magnitude of the difference in interatomic distance in terms of the nature of the bond orbitals.

  Finally, a discussion of the significance of the ionic structures and of the completely covalent structure should be carried out. This can be done by setting up a secular equation for the six structures. The energy values to be introduced in the diagonal terms of the secular determinant are those that have been calculated by the methods described above. The non-diagonal matrix elements are to be obtained with use of the formulas published by Schomaker and Simonetta. These formulas permit a reasonable estimate to be made of the resonance integral corresponding to change from a covalent to an ionic structure. The Coulomb integral for the ionic structure should be given such a value as to correspond to about 17% partial ionic character for an isolated phosphorus-chlorine bond. The resonance integral between one ionic structure and another ionic structure would have to be estimated, with use of the expressions given by Schomaker and Simonetta. The secular equation would then be solved, and the solution would give a value for the total energy of the phosphorus pentachloride molecule (uncorrected, however, for the energy of van der Waals repulsion of adjacent chlorine atoms), and also values for the contributions of the five ionic structures and the covalent structure to the normal state of the molecule. This final calculation should permit a statement to be made as to the extent to which the phosphorus atom has exceeded the octet in forming five bonds to chlorine.

  There are a number of other problems related to this one, that might be tackled later on. One of them is the problem of the configuration of the TeCl₄ molecule. The configuration of other halogen halides, such as IF₇, might also be discussed.

  Linus Pauling:W

  cc: Prof. Schomaker

• Letter from Newell Gingrich to LP RE: Gingrich informs LP that unless there are conflicts, he will go ahead and schedule LP’s Stewart Lecture for April 16th on the topic of “The Structure of Proteins.” [Letter from LP to Gingrich January 11, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.6]
• Letter from Thomas Francis, Jr., Virus Laboratory, School of Public Health, to LP RE: Informs LP of a conference to be held Feb 14-15 1952 at the School of Public Health, U of Michigan, having to do with the "Approach to Chemoprophylaxis and Chemotherapy of Virus Infections with special reference to Poliomyelitis." Asks if LP would be able to attend and present at such a conference. [Letter from LP to Francis, Jr. January 12, 1952] [Filed under F: Correspondence 1952, Box #128, Folder 17]
• Letter from William E. Vaughan, Chairman, Awards Committee, California Section of the American Chemical Society, to LP RE: Tells LP that the Lewis Medal is completed and will be sent to him, along with a bronze duplicate. Thanks LP for his patience. [Letter from LP to Vaughan, January 9, 1952] [Filed under LP Speeches: 1951s.19]
• Typescript, “Proposed Investigation of Electronic Structure of Phosphorus Pentachloride.” [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.1]

• Final copy of the proposal for the extension of a contract with the Office of Naval Research (ONR) on the structure of metals and intermetallic compounds written by LP. [Filed under LP Science: Box 14.031, Folder 31.2]
• Letter from LP to W.B. White saying that he does not feel there is any reliability to the work of Koch, and says that there is a tremendous amount of skepticism within the medical community. [Letter to White December 27, 1951]

• AHP writes cheque: to Sue Perry amount: $14.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP performs labwork that he entitles "Reconsideration of crystallized muscle." [Filed under LP Science: Box 6.001, Folder 1.13].
• Letter from David Pressman, Sloan-Kettering Institute for Cancer Research, to LP RE: Asks LP for permission to use one of his diagrams published in Endeavour for his own chapter on "Antibodies as Specific Chemical Reagents" for Volume III of Advances in Biological and Medical Physics. Also mentions a seminar he gave at the Naval Medical Research Institute on the specificity of the antibody site and the nature of the forces. Will give a lecture at the U. of Texas on hapten inhibition. [Letter from LP to Pressman January 14, 1952] [Filed under LP Correspondence: Box #309, Folder #7(Pressman, David)].
• Letter from LP to Dr. K. M. Rudall RE: Is anxious to get back to work on the crystallized fibrin that he has. Mentioned sending part of the crystallized sample, for photography at Caltech, though he thinks it is better to do it in Leeds. [Letter from Rudall to LP January 7, 1952, Letter from LP to Rudall January 16, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Dr. Lotmar [2 copies] RE: Thanks Dr. Lotmar for the letter of January 2, 1952 about the value of the length of the b axis of the muscle diagram. Goes on to discuss what he and his coworkers have discovered regarding the subject. Looks forward to reading Dr. Lotmar's reprints. [Letter from Lotmar to LP January 2, 1952] [Filed under L: Correspondence 1952, Box #230, Folder #18]
• Letter from LP to Dr. Lotmar, Switzerland. [Filed under LP Science: Box 6.001, Folder 1.13].

  HUMANISM AND PEACE

  Dr. W. Lotmar

  Binzenhofstrasse 23

  Aarau, Switzerland

  Dear Dr. Lotmar:

  I am glad to have your letter of January 2 about the value of the length of the b axis of the muscle diagram.

  I had already noticed that there was some difficulty in indexing your line (011). The measurements that we have made on your photographs lead pretty definitely to a value for b of about 5.3 A instead of 5.65. With this value of b (011) cannot be satisfactorily explained on the basis of your unit. We have accordingly decided that the unit has to be changed. At present it seems likely that the only change necessary is to double one of the other axes. This makes a much larger unit, and the agreement with the photograph is not nearly so convincing; nevertheless I myself think that there are good structural arguments to support the choice of the new unit.

  We ourselves are trying to make some samples of crystalized muscle, but do not know whether we are going to be successful or not.

  As to the fibrin diagram of Rudall, we succeeded in indexing all of the reflections, with a unit that has two small axes and one very large one. I have now asked Rudall to make some more photographs, since he still has the specimen of crystallized fibrin.

  I am looking forward to receiving your new reprints.

  Sincerely yours,

  Linus Pauling:W

• Letter from LP to Mr. George W. Bowyer RE: Regrets to say that Caltech does not have any students in pharmacy to help Mr. Bowyer on the problem he mentioned in his letter. [Letter from Bowyer to LP December 31, 1951] [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Letter from LP to Mr. William S. Klein RE: Writes in reference to Mr. Klein's letter that he believes that the theory of atomic structure that leads to Balmer's equation is correct. Says that if Mr. Klein thinks that he has an alternative theory, he should send LP a manuscript describing the theory. [Letters from Klein to LP January 3, 1952, January 14, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Letter from LP to Prof. D. Keilin F.R.S., Cambridge University, RE: Sends his congratulations for his receipt of the Copley Medal. [Note from Keilin to LP February 2, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Letter from LP to Sir Eric Rideal of U. of London RE: Writes in congratulations for his receiving the Davy Medal. [Letter from Rideal to LP January 30, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Sir Ian Heilbron, F.R.S. of the Royal Society RE: Writes to congratulate Sir Heilbron on his receipt of the Royal Medal at the Anniversary Meeting of the Royal Society. Thanks for the Christmas card. [Letter from Sir Ian Heilbron to LP February 6, 1952].
• Letter from LP to William E. Vaughan, Chairman, Awards Committee, California Section of the American Chemical Society, RE: Thanks him for the letter and states that he looks forward to receiving the Lewis Medal and the bronze duplicate. Expresses his thanks to Vaughan and his colleagues for selecting him as the first recipient of this Medal. [Letter from Vaughan to LP, January 7, 1952] [Filed under LP Speeches: 1951s.19]

• Letter from LP to Dr. George G. Wright RE: Answers Dr. Wright's letter of inquiry by telling him about his chances of receiving a Guggenheim Fellowship and by listing several alternative fellowships for which he might apply in his quest to take a year off to study respiratory enzymes. Goes on to describe what his department is currently working on. [Letter from Wright to LP January 2, 1952, letter of response from Dr. Wright to LP January 15, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from LP to G. B. Kistiakowsky RE: Thanks Prof. Kistiakowsky for his letter of recommendation for Robert Gomer. [Letters from Prof. Kistiakowsky to LP January 4, 1952, January 18, 1952] [Filed under LP Correspondence: Box #198, Folder #14 (Kistiakowsky, George B.)].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation, RE: LP gives his opinion of Garrett Hardin as requested. [Letter from Moe to LP January 4, 1952]. [Filed under LP Science: 14.014, 14.7].
• Letter from LP to Mr. Charles L. Jewett RE: Thanks Mr. Jewett for sending him the Arthur D. Little calendar. [Filed under J: Correspondence 1952, Box #192, Folder #18]
• Letter from LP to Mr. Lou Fleming RE: Writes to tell Mr. Fleming that he liked the article he had in the Star News a few days ago about the work at Caltech during the past year. Says that the article is of great value to Caltech. [Filed under F: Correspondence 1952, Box #128, Folder 17]
• Letter from LP to S. H. Human RE: Provides an explanation as to why he believes that blood from dead persons cannot be purified for transfusions. [Note from Human to LP December 27, 1951] [Filed under LP Correspondence: (H: Correspondence, 1951), #166.2]
• Letter from Mr. George E. Farrand to LP RE: Thanks LP for discussing with him the progress being made in the Laurabelle Arms Robinson cancer research fund inquiry. [poem entitled "Coffee with the Meal" included with the letter] [Letter from LP to Farrand January 14, 1952] [Filed under LP Correspondence: Box #117, Folder #6].
• Note from LP to self RE: Discusses "Magnetic moments of chromium and vanadium." Talks about how Shull's results agreed with his 1938 Physical Review diagram. [LP Science: Box 10.003, Folder 3.5]
• Statement by Linus Pauling to the press RE: States that the firing of Dr. Richard Lippman and the two other doctors from the Cedars of Lebanon Hospital is unjustified and should be reversed immediately. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].

• Itinerary: San Gorgonia Section, ACS, Riverside [Filed under LP Travel: Box #1.001 Folder 1.10]
• Letter from John G. Kirkwood to LP RE: Congratulates LP on his award of the Lewis Medal. Asks whether LP will be able to give a colloquium talk in the Department at Yale on Sigma Xi business. [Letter from LP to Prof. Kirkwood January 16, 1952] [Filed under LP Correspondence: Box #198, Folder #12 (Kirkwood, John G.)].
• Letter from L.A. DuBridge, President, Caltech, to LP RE: C.V. Newton will be contacting Division heads to organize the Alumni Seminar. [Filed under: LP Biographical, Box 1.030, Folder 30.3]
• Letter from LP to Dave Shoemaker of MIT RE: Thanks Prof. Shoemaker for his letter and the information on Shull's results. Is curious about how the argument about the hemihedry or holohedry of beta uranium and of the sigma phase finally comes out. Writes about uranium hexafluoride and polymolybdates. Also mentions Verner in relation to the structure of uranium hexafluoride. [original letter and carbon copy together in file] [Letter from Shoemaker to LP January 2, 1952, letter from LP to Shoemaker January 25, 1952] [Filed under LP Correspondence: Box #363, Folder #3 (Shoemaker, David and Clara 1947-1995)].
• Letter from LP to Dr. J D Dunitz RE: Writes that the draft of Dr. Dunitz's note on aureomycin and terramycin looked fine to him, but he hasn't spoken with Dr. Corey about the intensity calculations. [Filed under LP Correspondence: Box #96, Folder #21: file (Jack Dunitz)].
• Letter from LP to Dr. V. Vand of the U. of Glasgow RE: Answers Dr. Vand's letter of January 11, 1952. Discusses Prof. Schomaker's work on the form factor for the x-ray scattering by a helix. Does not think that it relates very closely to Dr. Vand's work. Hopes that Dr. Vand will publish his calculations. [Filed under LP Correspondence: Box #427, Folder #12]
• Letter from LP to Henry Allen Moe, John Simon Guggenheim Memorial Foundation RE: Offers his opinion of the eleven organic chemists suggested by Adams for a new-type fellowship, some which are favorable others that are not. Draws the final conclusion that none of the researchers are very original in their work so he would want to examine the proposal for something unique about the proposed research or the financial situation of the person before he supported awarding any of them a new-type fellowship. [Letters from Moe to LP November 27, 1951, January 14, 1952] [Filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.6]
• Letter from LP to Newell Gingrich, RE: LP looks forward to speaking on “The Structure of Proteins” on April 16th at the University of Missouri. AHP will accompany LP on this trip. [Letters from Gingrich to LP January 7, 1952, February 5, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.6]
• Letter from LP to Professor W.T. Astbury, Department of Biomolecular Structure, The University in Leeds, England RE: Includes abstracts of the two papers to be presented by LP and Dr. Corey on the planned trip to England.
• Los Angeles Times article entitled "Professor Defends Ousted Physicians" RE: discusses LP's public statement on behalf of a few doctors who were dropped from the Cedars of Lebanon Hospital staff for political reasons.
• Speech by LP on The Structure of Proteins, meeting of the American Chemical Society, San Gorgonio section, Chaffey College, Ontario, California. [Filed under LP Speeches: 1952s.1]
• Undated letter from W.T. Astbury to LP RE: Introduces LP to J.T. Marsh, who works in the textile industry and wishes to visit LP's lab at Caltech.

• Letter from J. Schweizer to LP RE: [Letter in German, awaiting translation] [Letter of response from LP to Mr. Schweizer February 4, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Dr. James E. P. Toman RE: Is sorry that he has answered his letter so late. Agrees with Dr. Toman's efforts involving an action at the Philadelphia Meeting of the A.A.A.S. [Letter from Dr. Toman to LP December 18, 1952].
• Letter from LP to Dr. Thomas Francis, Jr. RE: Regrets that he will be unable to attend the conference that Dr. Francis spoke of in his letter. Though he is interested in the subject of the conference, he has already made plans to visit the U of British Columbia on the date of the conference. [Letter from Francis, Jr. to LP January 7, 1952] [Filed under F: Correspondence 1952, Box #128, Folder 17]
• Note from John S. McKinley McKee to LP RE: writes in thanks for LP's New Year wishes. Congratulations for receiving the G. N. Lewis award. Is glad to hear that LP plans a stay in England in the Spring, hopes to show him around Emmanuel College. Is considering a stay in the states himself over the summer, and enquires about a fellowship [follow-up note from Mr. McKinley McKee to LP March 30, 1952] [Filed under M: Correspondence 1952, Box #256, Folder #3]
• Pauling Scrapbook: Program of Events for "Students' Day 1952" at Caltech RE: lists the program of events including a lecture by LP on "Crystal Structure." [Filed under LP Biographical: Box 6.006, Folder 6.19]

• LP Political: Passport Problems, Jan-March 1952. Reproduction of the New York Times Magazine by the American Civil Liberties Union Southern California Branch: article entitled "The Black Silence of Fear." [Filed under LP Biographical: Box 2.002, Folder 2.5]

• AHP writes cheque: to: A. C. Vroman amount: $30.54 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Adohr Milk Farms amount: $17.49 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Arthur Heimann and Sons amount: $19.46 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Athenaeum amount: $17.10 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Bullock's Pasadena amount: $36.71 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: California Artists amount: $6.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Chadwick School amount: $32.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Dept. of Motor Vehicles State of California amount: $33.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Dr. John G. Sundbye amount: $12.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Dr. Richard D. Armstrong amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Fashion Cleaners amount: $11.35 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Gould Music Company amount: $108.15 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Mira Loma Mutual Water Co. amount: $2.90 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Pacific Tel and Tel amount: $51.96 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Pasadena Star News amount: $2.05 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Prodis Rug and Carpet Co. amount: $20.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Richfield Oil Company amount: $29.49 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: S. California Edison Company amount: $28.10 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Southern Counties Gas Co. amount: $13.22 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Southwest Museum amount: $6.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: Standard Oil Company of California amount: $57.40 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: The Apothecary Shop amount: $1.61 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: The Wool Shop amount: $55.05 [Filed under LP Biographical: Box #4.021, Folder #3]
• Draft Itinerary for LP and AHP for Monday, February 11th in Portland [Oregon]. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]
• Letter from A. H. Walter to the Office of Naval Research (ONR), cc: LP RE: Encloses six copies of the proposal written by LP on January 8, 1952. [Filed under LP Science: Box 14.031, Folder 31.2]
• Letter from Charles Gaupp to LP RE: After having lunch with Linda [Pauling], Gaupp has learned that LP will be in Portland on the 12th of February. Gaupp would like to know if LP will be able to speak at Reed College at this time. [Letter from LP January 21, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]
• Letter from Daniel W. Elam to LP RE: Reminds LP of their conversations in Berkeley. Says that they discussed the upcoming interest of many agencies in the study of synthetic high polymers. Reminds LP that he mentioned that the Caltech Engineering School might be interested in the field that he is studying and would give him an interview. Tells LP that he will be visiting Pasadena January 21, 1952 through January 23, 1952 and hopes to get an interview then. [Letter from LP to Daniel W. Elan February 4, 1952] [Filed under E: Correspondence 1952, Box #112, Folder #18]
• Letter from Dr. Arthur Lee Phelps, Phoenix College, to LP . RE: Phelps says he would like to draw LP's attention to an error found within College Chemistry. [Filed under LP Books, 1950b1.4]
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation to LP RE: Enclosed is a copy of a letter that Moe previously sent, but never reached LP. The enclosed letter discusses a man named Dr. Burch and his grant proposal. [Letter from LP to Moe January 16, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation to LP RE: Requests that LP meet with Hardin and discuss his grant proposal so that Moe can get a better gauge of his abilities. [In LP's handwriting at top of page: Jan 17, evening interview. Doesn't have the personality or experience for the Fellowship. Doesn't understand the one basic argument of his proposal.] [Letter from LP to Moe January 21, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Henry Allen Moe, John Simon Guggenheim Memorial Foundation, to LP RE: Thanks him for his letter containing his evaluations of the men suggested by Adams for new-type fellowships. [Letter from LP to Moe January 11, 1952] [Filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.6]
• Letter from LP to David Pressman, Sloan-Kettering Institute for Cancer Research, RE: In response to Dr. Pressman's enquiry, writes that he will have to contact Endeavour for permission to use one of his diagrams. Writes about his work on proteins, crystallized muscle in particular, not so much on hemoglobin anymore. [Letters from Pressman to LP January 9, 1952, April 28, 1952] [Filed under LP Correspondence: Box #309, Folder #7 (Pressman, David)].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation RE: LP sends in his reports on various people being considered for Chemistry and Biochemistry fellowships. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Mr. George C. Farrand RE: Replies that he was pleased to have lunch with Mr. Farrand and Dr. Beadle and that he will update him on the work that is being done with the support of the Laurabell Arms Robinson Cancer Research Fund. [Letters from Farrand to LP January 10, 1953, May 19, 1952] [Filed under LP Correspondence: Box #117, Folder #6].
• Letter from Mr. H. W. Behme, Assistant to the Director at Stauffer Chemical Co., to LP RE: Requests a letter of appraisal about Dr. Richard N. Lewis, who they are considering for a position in their research department and who submitted LP's name as a reference. [Filed under LP Correspondence: Box #378, Folder #6]
• Letter from Mr. William Klein to LP RE: Writes that enclosed is a brief description of "Atomic Electric Circuits," showing an equivalent circuit for the hydrogen atom. Thanks LP for looking at this manuscript. [encloses part of his manuscript] [Letters from LP to Klein January 9, 1952, January 17, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Letter from Robert C. C. St. George to LP RE: Writes that he used LP's name for a reference in his application for membership in the American Society of Biological Chemists. Was pleased to see their paper in the December issue of Science. Requests that LP write a supporting letter on his behalf to the Society. [Letter from LP to St. George January 21, 1952] [Filed under LP Correspondence: Box #378, Folder #6].

• AHP writes cheque: to: Sue Perry amount: $20.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP performs lab work to determine the structure of the Lotmar-Picken muscle structure. [Filed under LP Science: Box 6.001, Folder 1.13].
• LP writes cheque: to: Collector of Internal Revenue amount: $4408.76 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from Dr. George G. Wright to LP RE: Thanks LP for his letter with his thoughts regarding the Guggenheim Fellowship. Goes on to describe in further detail his work and papers published. Requests information applying for a Guggenheim Fellowship. [Letters from LP to Wright January 10, 1952, January 21, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from Dr. Robert B. Corey to LP RE: Sends a report compiled by him and Dr. Pasternak on the present knowledge of the chemical and physical properties of the structure of collagen. Also includes reprints of four articles that are used for illustrative purposes. [Filed under LP Science: Box 6.004, Folder 4.3.]
• Letter from Jesse DuMond to Prof. Frederick D. Rossini, cc: LP RE: Submits feedback on Prof. Rossini's paper for which he requested review. [6 pages] [Letter from Rossini to DuMond January 19, 1952] [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from LP to Miss Jackie James RE: Gives Miss James Peter's address for home and at Caltech. Goes on to describe what Peter had been up to scholastically in the last year. [Filed under J: Correspondence 1952, Box #192, Folder #18]
• Letter from W. Hume-Rothery, Harry Irving and R. J. P. Williams of the Inorganic Chemistry Laboratory, Oxford, to LP RE: The group has recently been able to study LP's letter of December 3, 1951 and have also re-read his original papers and are relieved to report that besides one aspect included in this letter, they believe that their paper is correct, and that LP's letter was written on a misunderstanding. Go on for eight pages to systematically defend their paper. [Letter from LP to Hume-Rothery February 5, 1952].
• Memo from Judy Hagness to LP RE: Asks for LP to comment on the "attached so-called discovery of a so-called new element." [Letter from LP to Hagness January 17, 1952].

• LP Passport Problems, Jan-March 1952: F.A.S. [Federation of American Scientists] Newsletter, Wash. D.C. RE: article entitled "US Visa Policy Still Under Fire." [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.5]
• LP writes cheque: to: Beatrice J. Wulf amount: $150.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter from LP to "General Chemistry" RE: Several versions of a recommendation letter for Mr. Garvin Heiman in his application for medical school at St. Louis U., Harvard, Boston U., and Yale U. [Filed under H Correspondence: 1952, Box #166, Folder #3]
• Letter from LP to Dr. Edgar Reynolds Smith, National Bureau of Standards, U.S. Department of Commerce, RE: Thanks Dr. Smith for the congratulatory letter. States that he was pleased to accept this award because he greatly admires Professor Lewis. [Letter from Smith to LP December 18, 1951] [Filed under LP Speeches: 1951s.19]
• Letter from LP to Dr. Eric Ponder RE: Is interested in Dr. Ponder's work with sickle cells. Looks forward to reading his paper with Dervichian. [Letter from Ponder to LP January 6, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from LP to Dr. K. M. Rudall RE: Says that they will study at once the pictures sent of the crystallized fibrin which they received from them recently. Will send copies of their papers on polypeptide chains as soon as reprints arrive. [Letter from LP to Rudall January 9, 1953, Letter from Rudall to LP January 17, 1953] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Dr. Paul H. Emmett RE: Writes that he has been recently working on trying to get some samples of crystallized muscle in order that he might acquire crystalline z-ray diffraction photographs from them. Mentions LP Jr.'s application to intern in Honolulu. [following letter from LP to Dr. Emmett January 22, 1953] [Filed under LP Correspondence: Box #109, Folder #1].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial RE: LP strongly recommends David Hogness for a fellowship, despite his applying for a number of other grants as well. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial RE: Recommends that Dr. Burch receive the proposed fellowship based on his past record of excellent research. [Letter from Moe to LP January 14, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to John G. Kirkwood RE: Thanks Prof. Kirkwood for his letter of congratulations. Writes that he will be unable to give a colloquium talk during his trip to New Haven. [Letters from Kirkwood to LP January 11, 1952, February 1, 1952] [Filed under LP Correspondence: Box #198, Folder #12 (Kirkwood, John G.)].
• Letter from LP to Melvin D. Shoenberg RE: Says that he should call his office to make an appointment to come by and meet with LP. [Letter from Shoenberg to LP December 14, 1951]
• Letter from LP to Mme. and M. Daudel of the Institut du Radium RE: Thanks them for sending him a copy of their book on Wave Mechanics and the Structure of Molecules. [Filed under LP Correspondence: Box #89, Folder #6].
• Letter from LP to Prof. Frederick Rossini of the Carnegie Institute of Technology RE: Replies to a December 17, 1951 letter from Dr. Rossini. Discusses the difference between the physicist's mole and the chemist's mole as a unit of measurement. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from Prof. Dr. G. Scheibe to LP RE: [Written in German] [Letter from LP to Scheibe January 23, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from Prof. T.W.J. Taylor to LP RE: Writes that they will have a show in March with "J.Z. Young." [Letters from LP to Taylor November 19, 1951, January 22, 1952] [Filed under LP Correspondence: Box #405, Folder #7 (Taylor, T. W.)].
• Letter from T.W.J. Taylor to LP RE: Says that the show will be arranged for March 12 and is hoping that LP will be able to attend. [Letters from LP to Taylor November 19, 1951, January 22, 1952].

• Itinerary: Science Teachers Institute of Ventura County; Oxnard Union High School, 2 PM [Filed under LP Travel: Box #1.001 Folder 1.10]
• Letter from B. D. Van Evera, Chairman, Admissions Committee, American Chemical Society, to LP, RE: Thanks him for his information regarding Mr. C. J. Warneke. [Letter from LP to Van Evera 51, 12-1] [Box 14.006, Folder 6.4]
• Letter from David Crockett to LP RE: Informs LP that he received the letters from LP sent on December 12 and 13. Says that the Executive Committee does not feel like LP's term of membership has ended as he missed the 1950 meetings. Is looking forward to seeing him in the coming year. [Filed under LP Science: Box 15.008, Folder 8.4
• Letter from Dr. Charles M. Grossman to LP, RE: Asks LP to send him his statement made to the press so he could convince other doctors to protest the firing of the three physicians at Cedars of Lebanon Hospital. [Related statement from LP to the press January 10, 1952, letter from LP to Grossman January 21, 1952]. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].
• Letter from Dr. K.M. Rudall to LP RE: Says that he has sent some X-ray photographs. Would like to keep the fibrin specimen. Goes on to describe his findings about the specimen photograph. Sends other samples of spectra which are superposed on the standard one. [Letters from LP to Rudall January 16, 1952, January 23, 1953] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from Henry Allen Moe, Guggenheim Memorial Fellowship, to LP RE: Thanks LP for his opinions on the prospective fellowship members. [Letter from LP to Moe January 14, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Dr. Conway Pierce RE: Suggests that Dr. Peirce contact Prof. Alex Todd at Cambridge and Sir Robert Robinson at Oxford for suggestions of a man for temporary appointment in Hansch's job at Pomona College. [Letters from Pierce to LP November 28, 1951, January 23, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from LP to Dr. Joseph E. Hirshfelder RE: Thanks Dr. Hirshfelder for his letter recommending a student to LP's department. The Division has not made a decision yet about offering him an appointment. [Letter from Hirschfelder to LP December 17, 1951] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from LP to Dr. R. Byron Bird RE: Asks Dr. Bird to come to Pasadena for a week to get better acquainted with Caltech and the laboratories. Says that there is no one currently working on the properties of gases. Asks Dr. Bird to present at their chemistry seminar. [Letter from Bird to LP January 21, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from LP to F. R. Eircih, Brooklyn Polytechnic Institute, RE: States that Melvin D. Schoenberg has written to him inquiring about the possibility of working in their laboratories and has put down Mark’s name as a reference. Asks for his opinion of Shoenberg. [Letter from Schoenberg to LP December 14, 1951, letter from Eirich to LP January 24, 1952] [Filed under LP Correspondence: (S: Correspondence, 1951), #378.5]
• Letter from LP to Herman Mark, Brooklyn Polytechnic Institute, RE: States that Melvin D. Schoenberg has written to him inquiring about the possibility of working in their laboratories and has put down Mark’s name as a reference. Asks for his opinion of Shoenberg. [Letter from Schoenberg to LP December 14, 1951] [Filed under LP Correspondence: (S: Correspondence, 1951), #378.5]
• Letter from LP to Mr. William S. Klein RE: Writes that he has received Mr. Klein's letter of January 14, 1952 and does not believe that his description of atomic electric circuits constitutes a derivation of Balmer's equation. Goes on to describe why. [Letter from Klein to LP January 14, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Letter from LP to Ms. Judy Hagness RE: Writes in response to her inquiry about element No. 43. Describes a 43rd element created in Berkeley ten years ago as technetium. However, the research chemist and the creator of the new element Judy describes, called Andrium, does not claim that the substance is element No. 43. [Memo from Hagness to LP January 15, 1952].
• Letter from LP to Prof. J. G. Kirkwood RE: asks Dr. Kirkwood what his opinion of Dr. R. Byron Bird is, as they are considering him for appointment at Caltech. [Letter from Kirkwood to LP February 5, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from LP to Professor A. Todd of U. of Cambridge RE: Writes that he has referred Professor Conway Pierce of Pomona College to Todd for recommendations for an organic chemist that their department needs. Mentions his intention to attend the Royal Society Conference on proteins in England. [Letter from Todd to LP February 5, 1952] [Filed under LP Correspondence: Box #407, Folder #6 (Todd, A. R.)].
• Letter from LP to Sir Robert Robinson of Dyson Perrins Laboratory, Oxford RE: Writes that he has advised Professor Conway Pierce of Pomona College to contact him for a recommendation of a young organic chemist who could fill a one year opening in their staff. Hopes to visit Oxford when he attends the Royal Society meeting on protein structure. [Filed under LP Correspondence: Box #335, Folder #2: File (Robinson, Robert.)].
• Speech by LP on Recent Work on Proteins, Including Blood and Blood Substitutes, Ventura County Science Teacher Institute, Ventura, California. [Filed under LP Speeches: 1952s.2]
• Statement of Payment from Teachers Institute to LP for Speaking Services in the amount of $100.00. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.2]

• Letter from E. Richard Cohen, of North American Aviation, Inc., to Dr. Frederick Rossini, cc: LP RE: Replies to the January 4 letter sent to Dr. DuMond and the enclosed proposal regarding the chemical scale of atomic weights. Discusses issues associated with this. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from F.H. Soward to LP, RE: Soward is glad to hear that LP will be delivering the Candian Club Lectures. Invites LP to speak on the 15th to the Canadian Club. [Telegram from LP January 22, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from Frank Hungate to LP, RE: Hungate has heard that LP will be in the Portland area next month visiting Linda [Pauling]. Hungate asks if LP can take time to give a talk to the Portland Sigma Xi Club. [Letter from LP January 22, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.3]
• Letter from G. B. Kistiakowsky to LP RE: asks LP for recommendations of men who he thinks would be appropriate to replace Bright Wilson in the physical chemistry department. [Letter from LP to Kistiakowsky January 10, 1952, letter from Kistiakowsky to LP February 11, 1952] [Filed under LP Correspondence: Box #198, Folder #14 (Kistiakowsky, George B.)].
• Letter from Henry Allen Moe to LP RE: In regard to David Hogness, if he is able to get a grant from another source, that would better suit him than a fellowship. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation to LP RE: Thanks LP for his opinion of Dr. Burch. [Letter from LP to Moe January 16, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Henry Moe, Guggenheim Memorial Foundation to LP RE: Asks for LP's opinion on a fellowship renewal for Denis Fox. Enclosed is the letter from Fox to Moe. [Letter from LP to Moe January 28, 1952]. [Filed Under LP Science: Box 14.014, Folder 14.7].
• Letter from Robert L. Berg, of the Massachusetts General Hospital, to LP RE: Sends LP a draft of the recommendations made by the Scientific Advisory Committee. Would like him to make any necessary corrections. [Letter from LP February 11, 1952] [Filed under LP Science: Box 15.008, Folder 8.4]

• Letter from Dr. Rossini, of the Carnegie Institute of Technology, to Prof. Jesse DuMond, cc: LP RE: Thanks Prof. DuMond for his January 15, 1952 letter. Discusses issues associated with this feedback. [Filed under LP Science: Box 14.028, Folder 28.1]

• LP performs a re-measurement of the Lotmar-Picken muscle sample. Includes various calculations and measurements. [Filed under LP Science: Box 6.001, Folder 1.13].

• Letter from C. V. Newton of the California Walnut Growers Association to LP RE: Requests LP's assistance in the planning of the 1952 Alumni Seminar. Lets LP know that two members of the committee will request an interview in the near future to discuss their general plans for the Seminar. [Filed under N: Correspondence 1952, Box #287, Folder #19]
• Letter from Dr. R. Byron Bird to LP RE: Thanks LP for the invitation to visit Caltech. Plans to visit starting on February 18. Is pleased to have the opportunity to speak to the chemistry seminar. [Letters from LP January 17, 1952, January 23, 1952] [Note in pencil on the lower left of the paper says "Asked to be put on wait list."] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from Dr. Rossini to the Members of the Subcommittee on Fundamental Constants [LP was a member] RE: Encloses a copy of the January 15, 1952 letter from Dr. DuMond. Writes that he agrees with the changes submitted by Dr. DuMond and requests that members let him know whether or not they agree so he can publish the results in the Journal of the American Chemical Society. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from Dr. Rossini to the Members of the Subcommittee on Fundamental Constants [LP was a member] RE: Refers to his letter sent December 17 [1951?] regarding the definition of the chemist's mole. Asks for comments on the matter. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from J.B. Culbertson to LP, RE: Culbertson would like to know when LP plans to come and speak at Cornell College. Culbertson is willing to make any possible arrangement for a date that would be convenient for LP. [Letter from LP January 24, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.7]
• Letter from J.B. Culbertson, Cornell College, to LP RE: Attempts to firm up plans for LP to give a lecture at the college. [Letter from LP to Culbertson January 24, 1952]. [Filed under LP Speeches: 1952s.7].
• Letter from LP to Charles Gaupp, RE: LP and AHP are planning to be in Portland on the 12th and LP would be glad to give a talk that day to the Reed community. [Letter from Gaupp to LP January 14, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]
• Letter from LP to Dr. Arthur Lee Phelps, Phoenix College, RE: LP thanks Phelps for his letter and says that the error has been corrected. He trusts that Phelps will let him know about any other errors he finds. [Filed under LP Books, 1950b1.4]
• Letter from LP to Dr. Charles M. Grossman RE: Enclosed is a copy of LP's statement ot the press regarding the firing of Dr. Richard Lippman from the Cedars of Lebanon Hospital. [Letter from Grossman to LP January 17, 1952]. [Filed under LP Correspondence: Box #217, Folder #5 (Lippman)].
• Letter from LP to Dr. Elmer H. Stotz, Secretary of the American Society of Biological Chemists, Inc. RE: Writes a letter of support for Dr. St. George in his application for membership in the American Society of Biological Chemists. [Letter from LP to St. George January 21, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Dr. Gaupp RE: In reply to the January 14, 1952 letter, LP informs Dr. Gaupp that he will be arriving in Portland February 11 and will leave for Vancouver two days after that. He would be glad to give a talk on February 12.
• Letter from LP to Dr. George G. Wright RE: LP writes that he hopes that he will get his research written up and published, as his prospect of success in applying for a fellowship depends on it. Gives additional Guggenheim Fellowship information. [Letter from Dr. Wright to LP January 15, 1952, note from Dr. Wright to LP January 31, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Letter from LP to Dr. Robert C. C. St. George RE: As Dr. St. George requested in his letter, LP has written to Dr. Statz in support of his application for membership in the American Society of Biological Chemists. [Letter from St. George to LP January 14, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation RE: LP gives his opinions regarding a recent meeting with Hardin, who is being considered as a Guggenheim fellow. LP gives a negative impression of him and discusses discrepancies in his research. [Letter from Moe to LP January 14, 1952].
• Letter from LP to Professor William H. Jones of Emory University RE: In response to Prof. Jones last letter, LP gives him some suggestions for men that could fill a spot at Emery University for a third man in their physical chemistry staff. He notes men such as Bill Eberhardt at Georgia Tech and Dr. Kenneth Hedberg from Caltech. [Letter from Jones to LP November 30, 1951] [Filed under J: Correspondence 1952, Box #192, Folder #18]
• Letter from W.N. Lacey to LP RE: Minutes from a Committee on Graduate Study meeting on January 21, 1952. Discussed were pay rates of graduate students, which were discovered to be lower than average among other universities. Attached is a list of what particular fields of study typically pay graduate students. [Filed under: LP Biographical, Box 1.018, Folder 18.2]
• Material from National Committee to Repeal the McCarran Act [LP on letterhead as "Initiator"] RE: Sends an Open Letter to President Truman protesting setting up concentration camps under the McCarran Act. Requests signatures and any contributions.
• Telegram from LP to F.H. Soward, RE: LP is glad to speak to the Canadian Club on February 15th. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]

• Letter from Gaston F. Bell of Alcoa Mining Co. to LP RE: Asks for assistance in locating a source which will show what the heteropoly complex molybdisilicic acid looks like in molecular structure. [Letter from LP to Bell January 29, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Letter from LP to F.H. Soward, RE: LP hopes that Soward has received his telegram accepting the invitation to speak on February 15th. Under the title of “The Value of Fundamental Science” LP plans to discuss basic science and fundamental scientific research. [Letters from Soward to LP January 18, 1952, January 25, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from LP to Frank Hungate, RE: LP would like to give a talk to the Portland Sigma Xi Club on Monday February 11th. If Hungate does schedule LP for a talk, LP suggests a title of “The Structure of Hemoglobin.” LP feels that as a member of the national executive Committee of Sigma Xi that is it his duty to come and visit some of the clubs. [Letters from Hungate to LP January 18, 1952, January 25, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.3]
• Letter from LP to Frank Hungate, Reed College, RE: Confirms that he will be able to speak for the Sigma Xi Club in Portland on February 11, 1952. Suggests the subject to be "The Structure of Hemoglobin". [Letter from Hungate to LP January 25, 1952]. [Filed under LP Speeches: 1952s.4].
• Letter from LP to M. and Mme. Bernard Pullman RE: Congratulates them on their book on electronic theories of organic chemistry. [Filed under: LP Correspondence: Box #312, Folder #17]
• Letter from LP to Prof. T.W.J. Taylor RE: Writes in response to Prof. Taylor's letter that he will not be able to attend their meeting in Jamaica scheduled for March. [Letters from Taylor to LP January 16, 1952, January 28, 1952] [Filed under LP Correspondence: Box #405, Folder #7 (Taylor, T. W.)].
• Letter to LP from Victor Reynolds, Cornell University Press, RE: Oxford University Press has inquired about a new edition of LP's book, "Nature of the Chemical Bond." Reynolds wants to know if there will be a manuscript for the third edition in the near future. [Filed under: LP Manuscripts of Books, 1960b.5.2]

• Letter from A.L. Wirin to J.T. Mason, Chairman, Industrial Employment Review Board, Munitions Board cc: LP RE: Request for a postponement on the appeal hearing for an additional three months.
• Letter from A.L. Wirin to LP RE: Enclosed is a bill for legal services and expenses, with a note that Caltech should be responsible for the bill.
• Letter from Dr. Conway Pierce to LP RE: Thanks LP for his kindness in trying to help him find a replacement for Dr. Hansch at Pomona for a year. Appreciates the letters that LP wrote to Drs. Todd and Robinson of England. Will try for Helmkamp if nothing else works out. [Letter from LP to Dr. Pierce January 17, 1952] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from Dr. Conway Pierce to Prof. Todd of U. of Cambridge, cc. LP RE: Requests assistance in finding a man to replace Dr. Corwin Hansch at Pomona College while he is on sabbatical. [related letter from Dr. Pierce to LP November 28, 1951] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from Dr. Conway Pierce to Sir Robert Robinson, cc. LP RE: Writes requesting assistance in finding a man to replace their Dr. Corwin Hansch of Pomona College who will be on sabbatical for a year. [related letter from Dr. Pierce to LP November 28, 1951] [Filed under: LP Correspondence: Box #312, Folder #17].
• Letter from Frank T. Gucker, Jr. to Dr. Rossini, cc: Members of the Subcommittee on Fundamental Constants [LP was a member] RE: Discusses the definition of the chemist's mole. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from Jesse DuMond to Dr. Rossini, cc: LP RE: Thanks him for his January 19, 1952 letter. Discusses at length issues associated with it. [6 pages] [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from LP to Dr. K.M. Rudall RE: Thanks for the letter and the three additional films. Goes on in detail to answer Dr. Rudall's question about the nature of the substance producing the crystalline patterns as being proteins. [Letter from Dr. Rudall to LP January 17, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Letter from LP to Dr. R. Byron Bird RE: Looks forward to Dr. Bird's visit. Has titled the scheduled chemistry seminar talk for Dr. Bird "Intermolecular Forces in Gases." [Letters from Dr. Bird to LP January 21, 1952, February 6, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from LP to Jerry Donohue RE: Has asked Dr. R. Byron Bird to speak on Wednesday, Feb. 20th. Hopes that this does not interfere with something Jerry had arranged. [Filed under B: Correspondence 1952, Box #37, Folder #19]
• Letter from LP to Prof. Dr. G. Scheibe RE: In accordance with Dr. Scheibe's request, LP sends reprints of their papers on the protein problem. Brings up a matter that Prof. Sommerfeld and Dr. Scheibe had discussed about electing LP for corresponding member of the mathematics-science class of the Bavarian Academy of Science. He would be glad to be elected. [Letter from Dr. Scheibe to LP January 16, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from LP to Prof. R. S. Shankland of Case Institute of Technology RE: Sends those of his metals reprints and he still has. [Filed under LP Correspondence: Box #378, Folder #6]
• Letter from Ramon M. Esteve, Jr. to LP RE: Is forwarding a manuscript of a paper that he just wrote and is considering for publication to LP so that LP can please critique it. [Letter from LP to Mr. Ramon M. Esteve, Jr. February 4, 1952] [Filed under E: Correspondence 1952, Box #112, Folder #18]
• Letter from the ONR to A. H. Walter [copy sent to LP] RE: Informs A. H. Walter that they received the proposal that was sent on January 14, 1952 and that they will forward it to the physics department. [Filed under LP Science: Box 14.031, Folder 31.2]
• Memo from Robert F. Bacher to the Graduate Committee of the Physics Dept. RE: The memorandum outlines guidelines on tuition scholarships, graduate teaching assistantships, and graduate research assistantships. [Filed under: LP Biographical, Box 1.018, Folder 18.2]
• Telegram from Charles Gaupp to LP, RE: Gaupp would like to set a community lecture at Reed for February 12th. Gaupp asks if LP can sent a photograph and some biographical materials to be used for publicity. [LP’s reply January 24, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]

• Letter from Frank T. Gucker, Jr. to Dr. Rossini, cc: Members of the Subcommittee on Fundamental Constants [LP was a member] RE: Supports the use of a fixed constant in the definition of a chemist's mole. Refers to his letter sent on January 23, 1952. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from Frederick R. Eirich to LP RE: Says that Melvin Shoenberg is an extremely gifted worker, but displayed a considerable lack of discipline while at the Polytechnic Institute of Brooklyn. He goes on to describe in more detail his qualifications and abilities. [Reply to LP January 17, 1952, Letter from LP January 29, 1952] [Filed under LP Correspondence: (S: Correspondence, 1951), #378.5]
• Letter from H.K. Cheney of Convair to LP RE: Has heard that LP might be working on methods of detecting oxygen flows magnetically. Requests that LP send them whatever information that he can give them on the matter as they are interested in it. [Letter from LP to Cheney January 30, 1952] [Filed under C: Correspondence 1952, Box #74, Folder #20]
• Letter from LP to Charles Gaupp, RE: Suggests Molecular Medicine as the topic for his talk on February 12th. LP also plans to show some slides. [Gaupp’s telegram January 23, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]
• Letter from LP to Dr. Detlev W. Bronk, President of the National Academy of Sciences RE: Writes to thank him for appearing on his behalf before the Industrial Employment Review Board. Goes on to discuss the hearings and then his plans to travel to Europe in April of the same year. Asks for Dr. Bronk's help in the event that he has trouble obtaining a passport. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.5]
• Letter from LP to Dr. J.B. Koepfli, Office of Science Advisor, of the Department of State RE: Writes in regard to his application for a passport for travel to Europe. Encloses his letter to Mrs. Shipley, Chief of the Passport Division of the Department of State. Goes on to describe his work in protein structure as it applies to his scheduled travel to Europe and his situation with the Department of State. [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.5]
• Letter from LP to Dr. Martin P. Jaggi, Switzerland, RE: Does not know whether General Chemistry will be translated into German, but is forwarding the letter on to the publisher. [Letter from LP to Freeman January 24, 1952]. [Filed under LP Books: Box 1953b, Folder 1953b.2].
• Letter from LP to Dr. Rossini RE: Agrees with the changes proposed in his January 21, 1952 letter. Also approves the proposed definition of the chemist's mole. [Letter sent January 21, 1952] [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from LP to J.B. Culbertson, RE: Suggests that he visit Cornell College on April 15th and LP suggests that for his talk the title be “Chemistry in Relation to Medicine.” [Culbertson’s letter January 21, 1952, Culbertson’s reply February 2, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.7]
• Letter from LP to Mrs. Robert Shipley of the Passport Division of the Department of State RE: Reminds Mrs. Shipley of his request for a passport so as to enable him to travel to Europe in April. Includes his planned itinerary and reasons for traveling. [Letter from Shipley to LP February 14, 1952] [Filed under LP Biographical: Political Issues: Box 2.002, Folder 2.5].
• Letter from LP to N.A. Parkinson, RE: Enclosing a review of the book States of Matter by Hugh S. Taylor and Samuel Glasstone. [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.2]
• Letter from LP to W.H. Freeman RE: Enclosed is letter from Dr. Martin P. Jaggi requesting information on a German translation of General Chemistry. [Filed under LP Books: Box 1953b, Folder 1953b.2].
• Letter from T.S. Wheeler to LP RE: Thanks LP for his response and asks him to speak in Dublin the next time he makes it to Europe. [Letter to LP December 31, 1951]
• Publication: "Do We Need a Hippocratic Oath for All Scientists?" by Caroll C. Pratt. [LP Biographical: Box 2.039, Folder 39.15]

• LP writes cheque: to: Department of Motor Vehicles amount: $7.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• Letter form LP to A.L. Wirin RE: acknowledges bill receipt and will delay further action until it is known whether Caltech will pay the expenses. [Letter from A.L. Wirin to LP January 23, 1952].
• Letter from Aram L. Dinguilian to LP RE: Has written a small book, "The Protein Molecule, Its Geometrical Structure in Living Matter." Is discouraged because he has not received any feedback regarding his book from the community. Therefore, because he respects LP's work, he has sent him a copy of the book and requests that LP give him some criticism. [Letter of reply from LP to Dinguilian January 30, 1952] [Filed under D: Correspondence 1952, Box #98, Folder #17]
• Letter from Charles E. Neuman, Assistant Superintendent, Ventura School District, to LP RE: Thanks LP for speaking before the teachers of the district and encloses a check for $100.00. [Filed under LP Speeches: 1952s.2].
• Letter from Charles Neuman to LP, RE: Neuman thanks LP for contributing to the Ventura county Secondary Teachers Inservice Training Program. Neuman is enclosing a warrant for $100.00 for LP’s honorarium. [LP’s reply February 5, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.2]
• Letter from Dave Shoemaker of MIT to LP RE: encloses a copy of his NaZn13 manuscript. Asks for comments. Writes that "Gunnar" is finishing up the determination of parameters on the 162-atom compound. [related copy of letter from LP to Dr. I Fankuchen RE: LP's manuscript on NaZn13] [Letter from LP to Prof. Shoemaker January 11, 1952, letter from LP to Prof. Shoemaker March 10, 1952] [Filed under LP Correspondence: Box #363, Folder #3: File (Shoemaker, David and Clara 1942-1995)].
• Letter from F.H. Soward to LP, RE: Soward appreciates LP’s willingness to speak to the Canadian Club and also thanks LP for the biographical materials that he sent. Soward will be circulating these among the club members. [LP’s letter January 22, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from Frank Hungate to LP, RE: Hungate has made arrangements to have LP speak at the University of Oregon Medical School and notes that the title will be “The Structure of Hemoglobin.” [LP’s letter January 22, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.3]
• Letter from Frank Hungate, Reed College, to LP RE: Confirms that LP will give a speech at the University of Oregon Medical School on February 11, 1952. The topic shall be "the Structure of Hemoglobin". [Letter from LP to HungateJanuary 22, 1952]. [Filed under LP Speeches: 1952s.4].
• Letter from James A. Bryson of the U.S. Navy Office of Naval Research to LP RE: The Office of Naval Research and the Atomic Energy Commission is sponsoring a symposium on "High Temperature Chemistry" at the U. of Chicago on April 23, 24 and 25, 1952. Goes on to explain the title of the symposium. The program is divided into two general classifications. Asks that if LP is interested in presenting a paper in the symposium, he please send an abstract. [Letter from LP to Bryson March 4, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Letter from LP to Fernando L. Carraro RE: LP replies to an earlier letter from Mr. Carraro on becoming a Ph.D. student at Caltech. Gives him advice on assistantships and scholarships that are available. [Reply from Mr. Carraro to LP February 28, 1952] [Filed under: LP Biographical, Box 1.020, Folder 20.5]
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation RE: For a friend, LP requests information on the logistics of setting up a non-profit foundation. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation. [Filed under LP Science: Box 14.014, Folder 14.7]

  January 25, 1952

  Mr. Henry Allen Moe

  John Simon Guggenhiem Memorial Foundation

  551 Fifth Avenue

  New York 17, N.Y.

  Dear Henry:

  I am sorry to bother you at this moment, but I would be grateful to you for a word of advice on the following matter. I remember that you have helped in setting up some non-profit foundations, which is the matter which interests me now.

  A friend of mine is interested in using his money for the assistance of young men who will become outstanding. He has in the past helped young men to attend medical school, and he has been rather dissatisfied with the results - the men all have turned out to be prosperous practitioners.

  In talking with him, I have said that I think that the Harvard Society of Fellows has been about as successful as any group that I know about (I have also mentioned the John Simon Guggenheim Memorial Foundation to him). He seems to be interested in the idea of setting up a Society of Fellows, perhaps at the California Institute of Technology. However, I think that he is not very sympathetic to some of the members of our Board of Trustees; and, although I have not discussed this matter with him, he may object to turning the money over to the California Institute of Technology it-self.

  Do you think that a scheme might be worked out under which the Society of Fellows, probably not called the California Institute of Technology Society of Follows, could be set up as an independent foundation? The Harvard Society of Fellows was patterned to some extent after the Fellowship of Trinity College of Cambridge. Trinity College is, of course, an independent foundation; and, although the Harvard Society of Fellows is under the control of the Board of Overseers of Harvard University, I think that its founders had in mind that it would be something like Trinity College, in its relation to the University, aside, of course, from the preparation of students for their university examinations that Trinity College carries out. Do you think that there are serious objections to a plan that I

  Mr. Moe 1/25/52

  might propose to my friend, that he set up an independent foundation, that might be tied in, in a friendly way, to the California Institute of Technology, the Mount Wilson Observatory, and the Huntington Library and Art Gallery? I would suppose that the Foundation would, in the course of time at any rate, have its own house in Pasadena; that it would consist of several Senior Follows, in the main stuff members of the three institutions (perhaps with some exceptions), who would also be the trustees of the Foundation, in the way that the Fellows of an Oxford or Cambridge college are the trustees of the Foundation of the College, and that younger men would receive appointments, for a first three-year term, and perhaps a second terra, with stipends of the order of the best present post-doctorate fellowships. These men, after appointment, would be free essentially to carry on their work in the way that they thought beat - they might be, and usually presumably would be, associated with one of the three Pasadena institutions, or they might hold the fellowships elsewhere. Some of then might, in fact, be graduate students working for the doctor's degree. The emphasis in their selection would be on extraordinary quality, in the same way as in the Harvard Society of Follows.

  I estimate that about three million dollars of endowment would be available ultimately, with about one million dollars available at once. An income of about $40,000 would, I think, permit the immediate appointment of a half dozen junior fellows, or perhaps eight, and the number would ultimately be tripled.

  I would be grateful to you if you would send as a statement about ideas that occur to you immediately, in order that I might have the benefit of them when I next talk with my friend (Mr. Bantrell), on February 7. If plans develop in a satisfactory way, I shall hope to ask you for further advice later on. I am especially interested to have your opinion in general about my suggestion.

  Sincerely yours,

  Linus Pauling:W

• Letter from LP to Victor Reynolds, Cornell University Press, RE: LP informs Reynolds that the manuscript for the third edition will not be completed during 1952, and does not expect it to be ready before the fall of 1953. LP says that Reynolds can expect to receive the manuscript in fall of1953 and the book can presumably be published by the middle of 1954. [Filed under: LP Manuscripts of Books, 1960b.5.2]
• Letter from W.H. Freeman, W.H. Freeman and Co., to Dr. Martin P. Jaggi, RE: There is no German translation of this book underway, because after corresponding with a Swiss publisher, it was decided that there wasn't sufficient market for a translation. If a translator were to attempt the project, he would need to first approach a Swiss or German publisher, who must then approach Freeman. [Filed under LP Books, 1953b.2]

• Letter from Henry Allen Moe, Guggenheim Memorial Foundation, to LP RE: asks LP for his opinion regarding a fellowship applicant named Dr. Walter S. Root. [Reply from LP to Moe January 29, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].

• Letter from Barrie J. Wallworth, Dalhousie University, to LP . RE: Walworth says that he is a student using LP's General Chemistyr and would like to know if the answers to the questions in the book are available. [Filed under LP Books, 1953b.6]
• Letter from Clinton F. Schonberger of the San Bernardino Valley College to LP RE: writes that LP's talk at the A.C.S. meeting at Ontario was appreciated. Brings up his question about the Rothen phenomenon and requests some reprints pertinent to the question. [Notes in pencil at bottom: "lecture in London 1947 [Ex?] out Union Dr. [Siyer's?] work on Rothen," lists some reprint bibliographies.] [Letter of response from B. W. to Dr. Schonberber February 7, 1952] [Filed under LP Correspondence: Box #378, Folder #6].
• Letter from H. Kacser to LP RE: is a chemist who writes to LP for help and advice. Sends along a manuscript of his on some topic similar to LP's work on immunology. Is wondering if it is possible for him to work in the Gates and Crellin Labs and asks LP for advice about how to get a grant of some kind. Also asks for feedback from LP on the MS. [includes a summary of career with the letter] [Letter of response from LP to Mr. Kacser February 21, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Pauling Scrapbook: Pasadena (California) Star News article entitled "Brazilian Honors Come to Pauling" RE: two Brazilian educational institutions honor LP due to his fundamental discoveries on the nature of chem binding, the structure of crystals and molecules, discoveries in the field of protein chem and contributions in the teaching of general chem. [Filed under LP Biographical: Box 6.006, Folder 6.19]

• Letter from A.L. Wirin to LP RE: acknowledges receipt of January 25, 1952 note, and encloses a copy of a note sent to Mason. [Letter from LP to Wirin January 25, 1952].
• Letter from Ernest Perrault to LP, RE: Perrault would like to have a photograph of LP and some biographical materials in order to publicize his talks to the University of British Columbia. [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from Henry Allen Moe of John Simon Guggenheim Memorial Foundation to LP RE: responds to LP's suggestion concerning a proposed Society of Fellows. Indicates that it seems like a very plausible idea. Includes information about another organization (the Telluride Association) which incorporates some of the ideas that LP's donor has in mind. Includes copies of the Telluride Association case (People Ex Rel. Walcott v. Parker). [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation, to LP RE: thanks LP for sending his opinions regarding the fellowship of Garrett Hardin. [Previous letter from LP to Moe January 21, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Jarvin R. Heiman to LP RE: writes to LP asking him to fill out the enclosed rating sheets for several universities that he is applying to for medical school. [Note in pencil on top of letter: "Write letter instead"] [related copies of letters of recommendation from LP to the schools for Mr. Jarvin R. Heiman January 16, 1952] [Filed under H Correspondence: 1952, Box #166, Folder #3]
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation RE: does not think that Dennis Fox is worthy of a fellowship renewal. [In reply to letter from Moe to LP January 18, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation RE: his reactions after a recent conversation with Dr. Elvira Goettsch, who is being considered for a fellowship. His impression is a positive one. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to L.A. DuBridge RE: attached is a bill from A.L. Wirin to LP that LP requests to be paid by Caltech. Mentions being pleased with Wirin's work, and why he opted to continue with his council rather than the services of the lawyer suggested by Caltech. [Related letter from Wirin to LP January 28, 1952].
• Letter from LP to Mr. Henry Allen Moe, Guggenheim Memorial Foundation RE: met with Dr. Zentmeyer, who is being considered for a Guggenheim Fellowship, and his impression was that the research was questionable. His research is highly chemical in nature, and he doesn't have a background in chemistry. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Prof. H.F. Mark of the Polytechnic Institute of Brooklyn RE: writes in response to Prof. Mark's December 3, 1951 letter about applying to the Ford Foundation for funds for the construction of an International House. Says that Dr. Hutchins does not suggest applying for such a grant. [Letter from Prof. Mark to LP January 31, 1952] [Filed under LP Correspondence: Box #244, Folder #1 (Mark, Herman)].
• Letter from Meyer S. Gunther M.D., Editor of the Interne to LP RE: asks LP to write an article for their magazine for medical students, as the magazine is just now restarting publication after a year's absence due to financial difficulties. [Letter of response from LP to the Interne February 1, 1952] [Filed under I: Correspondence 1952, Box #185, Folder #13]
• Letter from Prof. T.W.J. Taylor to LP RE: writes in response to LP's letter that he is disappointed that he cannot attend their meeting in Jamaica. Was interested in hearing about LP's protein work. [Letter from LP to Prof. T.W.J. Taylor January 22, 1952, letter from LP to Prof. T. W. J. Taylor July 2, 1952] [Filed under LP Correspondence: Box #405, Folder #7, file: (Taylor, T. W.)].
• Letter from T.W.J. Taylor to LP RE: saying how disappointed they all are that he will not be able to visit. [Reply to LP January 22, 1952]
• Letter from Victor Reynolds, Cornell University Press, to LP, RE: Reynolds informs Pauling that it is fine that Cornell University Press receive Pauling's manuscript for the third edition in the fall of 1953. Alternatively, receipt of the manuscript in mid-1954 is acceptable as well. [Filed under: LP Manuscripts of Books, 1960b.5.2]

• AHP writes cheque: to: Claremont Hand Prints amount: $7.73 [Filed under LP Biographical: Box #4.021, Folder #3]
• Copy of a Letter from LP to Yale University, U of Calif. Berkley RE: a letter of recommendation for Theodore Einwohner in his pursuit into graduate school. [Filed under E: Correspondence 1952, Box #112, Folder #18]
• Letter from Henry Allen Moe to LP RE: sends a photostat copy of the Telluride Association case decision. [photostat included] [related letter from Henry Allen Moe to LP January 28, 1952] [Filed under LP Correspondence: Box #14, Folder #7].
• Letter from LP To Frederick R. Eirich, Polytechnic Institute of Brooklyn, RE: Thanks him for the information. States that shortly before his letter arrived they decided not to offer him an appointment and that Eirich’s letter confirmed their decision. [Letter from Eirich to LP January 24, 1952] [Filed under LP Correspondence: (S: Correspondence, 1951), #378.5]
• Letter from LP to David Crockett RE: LP was glad to receive Mr. Crockett's January 17, 1952 letter informing him that his membership on the Scientific Advisory Committee continues for another year. [Filed under LP Science: Box 15.008, Folder 8.4]
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation, RE: LP gives his opinions of Dr. Walter S. Root, which are largely negative. [In reply to letter from Moe to LP January 26, 1952]. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Melvin D. Schoenberg, cc. Robert B. Corey, RE: Regretfully informs him that they have decided not to offer him an appointment at Caltech. Thanks Schoenberg for visiting them. [Filed under LP Correspondence: (S: Correspondence, 1951), #378.5]
• Letter from LP to Mr. Don Berry RE: Thanks Mr. Berry for the painting that he sent. Says that the structure of sodium that he was working on when Mr. Berry was in Pasadena was the wrong one and so the puzzle remains. Suggests signing the painting. Asks what plans Mr. Berry has for the future. [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Letter from LP to Mr. Gaston F. Bell RE: LP refers Mr. Bell to some literature regarding the structures of heteropoly acids, as Mr. Bell requested in his letter to LP. [Letter from Mr. Bell to LP January 22, 1952, follow up letter from Mr. Bell to LP February 4, 1952] [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Letter from LP to Mr. W.H. Buck RE: says that the suggestion that Mr. Buck made in his letter regarding antibodies has been discussed for many years. Experiments have been made, and accordingly, they have yielded negative results. [Letter from Mr. Buck to LP January 29, 1952, see above, NO DATE]. [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Letter from LP to the Committee on Fellowships and Scholarships of the U. of Chicago RE: writes an appraisal of Peter H. Verdier as he is applying for graduate school at the U. of Chicago. [copy of filled out application answers included with the letter] [Filed under V: Correspondence 1952] [Filed under LP Correspondence: Box #427, Folder #12].
• Letter from Professor W. M. Latimer of the Dept. of Chemistry and Chemical Engineering of the University of Berkeley to LP RE: writes a recommendation for Dr. Z. Z. Hugus, a professor in inorganic chemistry with aptitude in quantum mechanics. [Letter from LP to Prof. Latimer February 5, 1952] [Filed under LP Correspondence: Box #212, Folder #15 (Latimer, Wendell)].
• Letter from W. H. Buck to LP RE: Presents a hypothesis regarding antibodies and asks LP for criticism. [Letter of response from LP to Mr. W. H. Buck January 29, 1952]. [Filed under B: Correspondence 1952, Box #37, Folder #20]
• Memo from LP to Gunnar Bergman. [Filed under LP Correspondence: Box #27, Folder #12]

  To Gunnar Bergman

  From Linus Pauling

  Jan. 29, 1952

  Subject: Intermetallic compound AuPb₂

  In the Strukturbericht, vol. 3, page 612, there is a paper by H. Perlitz on alloys of gold and lead. He reports that the compound Au₂Pb has the C15 structure, with a = 7.91 A.

  He also reports that there is a cubic phase AuPb₂, with a = 16.14 A. This corresponds to about 52 gold atoms and 104 lead atoms in the unit cube. The gold atoms are about 20 percent smaller than the lead atoms; hence this is a structure of a somewhat different sort from those that we have been investigating; in this structure there are more large atoms than small atoms.

  The total number of atoms, about 156, is close to the total number for the phases that you have just been investigating, 162; but the sizes of the atoms make it unlikely that the structures are related.

  I suggest that you have Dr. Waugh make a sample of AuPb₂, by the method described in the paper, and that you prepare a powder photograph, and attempt to determine the lattice and space group, and ultimately the structure.

  Linus Pauling:W

• Note from Mrs. Rowand Edwards to Caltech RE: How to remove a stain from antique lace. Writes in the hope that someone at Caltech can suggest some methods of removing stains from lace. [Letter of response from LP to Mrs. Edwards February 1, 1952] [Filed under E: Correspondence 1952, Box #112, Folder #18]
• Notes from LP to himself on the January 1952 issue of the Journal of Chemical Education and an article by K.J. Mysels of the Department of Chemistry of the University of Southern California. [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.20]
• Telegram from Charles Gaupp to LP, RE: Reed College would be honored to be LP’s host while he is visiting. Gaupp would like LP to indicate his preferences as to a hotel and what other accommodations he may require [LP’s reply January 30, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]

• AHP writes cheque: to: Manor Market amount: $50.00 [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]
• Letter from C. B. Belknap of Owens-Illinois Glass Company to LP RE: encloses the Conjectures regarding the Nature of Fused Silica. Writes that some men at their laboratories are also doing work on the same matter. Asks for comments on the paper from LP. [manuscript included] [Letter from LP to Mr. Belknap February 4, 1952] [Filed under LP Correspondence: Box #299, Folder #7 file: (Owens-Illinois Glass Company)].
• Letter from C.A. Lowe, National Institutes of Health to LP RE: a receipt showing final payment of $9,990.00 on a total grant of $19,980.00. [Filed under LP Science: Box 14.041, Folder 41.2].
• Letter from Dr. Rossini to the Members of the Subcommittee on Fundamental Constants [LP was a member] RE: Discusses issues clarifying the relation between the values of the constants for the electronic charge and the Faraday. [Filed under LP Science: Box 14.028, Folder 28.1]
• Letter from E.N.C. Andrade at the Royal Institute to LP RE: asks LP to give an evening discourse on his protein work and offers dates. [Letter from LP to Andrade February 6, 1952].
• Letter from LP to Barrie J. Wallworth, RE: In answer to Wallworth's letter, LP says that he is planning to include some of the answers to problems in the next edition of his book. He adds that the publisher gives a list of the answers to teachers who want it, but isn't sure if he would send the answers to a student. [Filed under LP Books, 1953b.6]
• Letter from LP to Dr. Melvin Calvin, Department of Chemistry, University of California, Berkeley, RE: States that he is very pleased with the January 1952 issue of The Vortex. States that AHP and he liked the cover picture and inquires if he could obtain a nice print of it. [Letter from Calvin to LP, February 11, 1952] [Filed under LP Speeches: 1951s.19]
• Letter from LP to J.G. Hooley, RE: LP suggests that the title for his lecture to the student body at the University of British Columbia be “The Place of Science in the Modern World.” For LP’s lecture at the Vancouver Institute the title will be “Chemistry in Relation to Medicine.” [Hooley’s reply February 8, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.5]
• Letter from LP to Mr. Aram L. Dinguilian RE: Writes that the reason that Mr. Dinguilian has probably not received feedback about his published work on proteins, is because his fundamental structural postulates are wrong, as well as the fact that none of his writing is based on experiment, only postulation. LP goes on to describe where Mr. Dinguilian has erred in his reasoning. [Letter from Mr. Dinguilian to LP January 25, 1952, letter of response from Mr. Dinguilian to LP February 17, 1952] [Filed under D: Correspondence 1952, Box #98, Folder #17]
• Letter from LP to Mr. H. K. Cheney of Convair RE: In response to Mr. Cheney's letter, LP responds in the negative. He and his collaborators have only developed instruments for measuring the partial pressures of oxygen, not the rates of flow. [Letter from Mr. Cheney to LP January 24, 1952] [Filed under C: Correspondence 1952, Box #74, Folder #20]
• Letter from LP to Professor W. N. Latimer, Department of Chemistry, University of California, Berkeley, RE: Thanks Professor Latimer for giving an interesting and thoughtful talk about him at the Gilbert Newton Lewis Medal ceremony. States that AHP and he had hoped that they would be able to accept his invitation to visit Berkeley this spring. States that he doubts that this will be possible because he has accepted an invitation to attend a conference on protein structure to be held by the Royal Society in London on 19, May . [Filed under LP Speeches: 1951s.19]
• Letter from M. Delbrück to Dr. Ruska [cc: LP] RE: Writes to Dr. Ruska to tell him that while they are interested in having him work at Caltech, they are not sure they can meet his needs. Goes on to describe what they can offer him in terms of a position and encourage him to arrange a visit if he is still interested in the job that is open. [Filed under LP Correspondence: Box #340, Folder #17]
• Letter from Sir Eric Rideal to LP RE: thanks LP for his letter of congratulations. [Letter from LP to Rideal January 9, 1952] [Filed under LP Correspondence: Box #340, Folder #17].
• Pauling Scrapbook: (New York) National Guardian article entitled "Purge hits doctors" RE: several doctors were fired from the staff of L.A. Cedars of Lebanon Hospital for political reasons in relation to the Un-AAC. LP protests the dismissals. [Filed under LP Biographical: Box 6.006, Folder 6.19]
• Proposal from LP to the Office of Naval Research RE: "Proposal for an Extension of Contract on the Structure and Properties of Proteins and Polypeptides". Details the nature of continued research and budgeting specifics. [Filed under LP Science: 14.032, Folder 32.1].
• Telegram from LP to Charles Gaupp, RE: LP would prefer to have a double room near to campus. LP plans to rent a car while at the airport. [Gaupp’s telegram January 29, 1952] [Gaupp’s reply February 5, 1952] [Filed under LP Speeches: (Speeches by Linus Pauling, 1952), Box 1952s, Folder 1952s.4]

• AHP writes cheque: to: Collector of Internal Revenue amount: $11.76 [Filed under LP Biographical: Box #4.021, Folder #3]
• AHP writes cheque: to: The Caltech Alumni Fund amount: $10.00 [Filed under LP Biographical: Box #4.021, Folder #3]
• LP and Verner Schomaker of Caltech submit a proposal for research on the structure of gaseous compounds of silicon by the electron diffraction method. The proposed budget for 1952 is $15,000.00. [Filed under LP Science: Box 1.002, Folder 2.13].
• Letter from G. M. Kosolapoff of the Alabama Polytechnic Institute, to LP RE: asks that LP give comments on a problem in connection with the application of the resonance principles to molecular configurations, describes the problem in the rest of the letter [Letter of response from LP February 7, 1952, letter from Dr. Kosolapoff to LP February 14, 1952] [Filed under K: Correspondence 1952, Box #200, Folder #17]
• Letter from Henry Allen Moe, Guggenheim Memorial Foundation, to LP RE: Thanks LP for his letters regarding various fellowship candidates. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from LP to Henry Allen Moe, Guggenheim Memorial Foundation RE: Discusses Dr. Richard Lippman's situation. [Filed under LP Science: Box 14.014, Folder 14.7].
• Letter from Prof. H.F. Mark of the Polytechnic Institute of Brooklyn to LP RE: thanks LP for his letter inquiring about Dr. Melvin D. Schoenberg's qualifications. Goes on to write what he knows about him. [Letter from LP to Prof. Mark January 28, 1952, letter from LP to Prof. Mark March 4, 1952] [Filed under LP Correspondence: Box #244, Folder #1 (Mark, Herman)].
• Letter from R.S. Cahn, Editor of "Annual Reports on the Progress of Chemistry" to LP RE: Requests permission to reproduce and publish some illustrations of LP's. [Letter of response from LP to Mr. Cahn March 4, 1952] [Filed under C: Correspondence 1952, Box #74, Folder #20]
• Note from Dr. George G. Wright to LP RE: thanks LP for the further information on the Guggenheim Fellowship and mentions his future plans regarding the fellowship. [Letter from LP to Dr. Wright January 21, 1952] [Filed under LP Correspondence: Box #443, Folder #20].
• Pauling Scrapbook: (California Institute of Technology) (Pasadena) California Tech article entitled "Pauling Honored by Brazilians" RE: two Brazilian educational institutions honor LP. [Filed under LP Biographical: Box 6.006, Folder 6.19]
• Pauling Scrapbook: (California Institute of Technology) (Pasadena) California Tech article entitled "Y's Doings" by Irwin Rubenstein RE: says that LP will host the first undergraduate fireside of the term at his home. [Filed under LP Biographical: Box 6.006, Folder 6.18]
• Typescript, “Proposal for Research on the Structure of Gaseous Compounds of Silicon by the Electron Diffraction Method.” [Filed under LP Manuscripts of Articles: (Manuscripts and Typescripts of Articles by Linus Pauling, 1952), Box 1952a, Folder 1952a.3]