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• Bill for Toll Service and Telegrams from June 12th - September 15th for $14.50. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Bill for pool service for the month of June for $27.50. Handwritten note indicates that it was paid. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Booklet: America, Russia, and the Bomb, National Council Against Conscription, June 1950. [Filed under LP Peace: (Assorted Non-Pauling Peace Materials: Articles, Typescripts, Pamphlets, Booklets (Me-Na)), Box #8.004, Folder #4.20]
• Pamphlet: “Fetal Hemoglobin in the Human: A Review” by Harold Lecks and Irving J. Wolman, reprinted from American Journal of the Medical Sciences [Filed under LP Science: (Non-Pauling Reprints re: Hemoglobin research, 1930s - 1950s), Box #6.009, Folder #9.2]
• Photo: Alfred Stern looking at the camera with hands clasped. “Alfred Stern” “To Mrs. Peache Vickerson, the kindest and most charming telephone supervisor I ever met-on three different continents (America, Europe, Africa) Cordially Alfred Stern June, 1950” Photographer unknown. Black and white print. [Filed under LP Photo Box: 1950i.22]
• Structural chemistry in relation to biology and medicine. (Second Bicentennial Science Lecture of the City College Chemistry Alumni Association, New York, December 7, 1949). Baskerville Chemical Journal 1, no. 1 (February 1950): 4-7. Reprinted in: The Journal of the Alumni Association, School of Medicine, College of Medical Evangelists, XXI (June 1950): 7-9, 22. [Filed under LP Publications: 1950p.2]
• Thesis Dissertation: ‘Studies on the Identification, Distribution and Metabolism of a Vitamin C - Like Substance in Brain” by Robert Cecil Meeks. [Filed under LP Science: Box #11.057, Folder #57.1]

• Bill from the Polytechnic Elementary School for Crellin Pauling for $3.50. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Bill from the Reliable Spray Co. to LP for $36.50. Handwritten note indicates that it was paid. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Check from AHP to Maud Steffens for $10.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Mrs. Gene Browne for $5.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from LP to American Men of Science for $2.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from LP to Beatrice Wulf for $100.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Letter from Helen M. Daugherty, Secretary, Maud E. Warwick Fund for War Orphans, Inc., to LP RE: Thanks him for his evaluation of the two applicants for the Maud E. Warwick Fund. Scholarship. [Letter from LP to Daugherty, May 29, 1950] [Filed under LP Correspondence: (D: Correspondence, 1950), #98.15]
• Letter from LP to A. R. Todd, University Chemical Laboratory, University of Cambridge, RE: States that he was disappointed to learn from Weinman that H. S. Forrest did not receive a Commonwealth Fellowship. Says that he will discuss the matter with Beadle and find out if they have enough local funds to offer him a fellowship. Discusses his recent trip around the South and the East to give lectures before local American Chemical Societies. Congratulates Todd on receiving the Davey Medal. [Letter from Todd to LP, May 23, 1950] [Filed under LP Correspondence: (Todd, Alexander), #407.6]
• Letter from LP to Advertising Displays, Inc. RE: Attaches an advertisement for the Stereo-Tach and requests that they send him one with an additional slide viewer. [Filed under LP Correspondence: (A: Correspondence, 1950) #12.16]
• Letter from LP to Dr. Fred M. Garland, Department of Chemistry, Texas College of Arts and Industries, RE: Thanks him for his letter and congratulates him for his recent appointment as chairman of the Chemistry Department. Also writes to thank him for his comments on his article in the Retort. [Letter from Garland to LP, May 24, 1950] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.2]
• Letter from LP to Dr. H. B. Wilde, Humble Oil and Refining Company, RE: States that he is looking forward to presenting the lecture course on the nature of the Chemical Bond. States that he would like to give a formal lecture each morning and have an informal discussion of problems and answer questions in the afternoon. States that he will use his book, The Nature of the Chemical Bond and discusses related matters. Agrees to sign an agreement not to divulge confidential and semi-confidential information but states that he hopes there is not a lot of information of this sort because he does not like to be burdened with deciding whether scientific knowledge that he has gained is open or restricted. Mentions that he will write Dr. Franklin about hotel accommodations. [Letters from Wilde to LP, May 24, 1950 and June 8, 1950] [Filed under LP Speeches:1950s.19]
• Letter from LP to Dr. J. L. Franklin, Humble Oil and Refining Company, RE: Discusses arrangements regarding the course in chemical bonds that LP will give at Humble Oil and Refining Company. Asks Franklin to find accommodations for them. [Letters from Franklin to LP, May 26, 1950, June 8, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from LP to Dr. P. W. Selwood, Department of Chemistry, Northwestern University, RE: Informs Dr. Selwood that he will be able to take part in the lecture series on November 7, 1950. States that there are several topics that he could discuss under the general subject, “Inorganic Chemistry at the Half Century.” Discusses and inquires about various potential topics. [Letters from Selwood to LP, May 29, 1950 and June 5, 1950] [Filed under LP Speeches: 1950s.25]
• Letter from LP to Elliott R. Weyer, Charles Pfizer and Company, Inc., RE: Asks that Charles Pfizer make a grant of $5000 to the Division of Biology for a fellowship for Dr. H.S. Forrest. [Letter from Weyer to LP June 7, 1950] [Filed under LP Correspondence: (Charles Pfizer and Company, Inc., 1950, 1969), #70.1]
• Letter from LP to Elliott R. Weyer, Charles Pfizer and Company, Inc., RE: Thanks him for the samples of terramycin. [Letter from Weyer to LP, May 25, 1950] [Filed under LP Correspondence: (Charles Pfizer and Company, Inc., 1950, 1969), #70.1]
• Letter from LP to Erwin Brand, Department of Biochemistry, Columbia University College of Physicians and Surgeons, RE: Tells Brand that his manuscript is satisfactory and returns it with a few minor suggestions. States that they look forward to having the peptides mentioned in his footnote and would like to have a gram of each, if he can spare that much. [Letter from Brand to LP, May 30, 1950] [Filed under LP Correspondence: (B: Correspondence, 1950), #37.17]
• Letter from LP to Florence Chesse RE: Lists three corrections he has found to be made in College Chemistry. [Letter from Freeman to LP May 29, 1950] [Filed under LP Books: 1950b.2]
• Letter from LP to Jay Stewart, President, Phi Lambda Upsilon (Honorary Chemical Society), Ohio State University, RE: Accepts the invitation to participate in the lecture series but states that he will be unable to come in the fall. States that it would be possible for him to visit in early February. Expresses his agreement with the subject matter of the speech and suggests a title of “The Structure of Antibodies and the Nature of Serological Reactions.” States that he believes that he can cover this subject in three lectures. Tentatively suggests a date of February 10. Inquires about the required manuscript and states that he would prefer to write a summarizing manuscript. [Letters from Stewart to LP, May 29, 1950 and June 17, 1950] [Filed under LP Speeches: 1951s.3]
• Letter from LP to Stanley Schaefer RE: Says that he likes the cover and the typography of College Chemistry and that he has found few errors. [Filed under LP Books: 1950b.2]
• Letter from LP to W. F. Holcomb, Secretary, Research Committee, Parke, Davis & Company, RE: Thanks him for the reinstatement of the grant proposal that was originally turned down. [Letter from Holcomb to LP, May 8, 1950] [Filed under LP Correspondence: (Parke, Davis and Company), #310.2]
• Memo from LP to J.H. Sturdivant RE: Informs him that Parke, Davis and Company is giving them a grant for a fellowship program in the Division of Chemistry and Chemical Engineering. He asks how he might set up the fund for the budget in the division. [Filed under LP Correspondence: (Parke, Davis and Company), #310.2]
• Policy Statement from Hartford Accident and Indemnity Company to LP RE: Insurance coverage for 1950-1951 for self and automobiles. [Filed under LP Biographical: (Business and Financial: Insurance Documents 1922-1992), Box #4.040, Folder #40.3]
• Statement from Keefer’s Garage to AHP: Bills her for $40.31. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Statement from LP to Mira Loma Mutual Water Co.: Provides them with the water meter readings for his property, corresponding to a total bill of $12.93. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]

• Bill from the Fashion Cleaners to AHP for $13.75. Handwritten note indicates that it was paid. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Letter from LP to Mr. Morris Spivack RE: States that he is not aware of any evidence that justifies Spivack’s belief about radioactive potassium. Informs him that he has not had any experience with the effects of radioactive potassium. [Letter from Spivack to LP, May 24, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from LP to Walter M. Boothby, Institute of Physiology, University of Lund, RE: Assures Boothby that he will have a Pauling Oxygen Meter before he sails in October. Under separate cover is a reprint of LP’s research on sickle cell anemia. [Letter from Boothby to LP, May 26, 1950] [Filed under LP Correspondence: (B: Correspondence, 1950), #37.17]
• Letter from W. Albert Noyes, Jr., Editor, Journal of the American Chemical Society, to LP RE: Asks LP to critique the enclosed manuscript entitled, “Note: The Resonance Energy of Benzene,” by Hornig. [LP’s Referee Comments, June 8, 1950] [Filed under LP Correspondence: (Journal of the American Chemical Society), #191.1]
• Memo from A.H. Walter to LP RE: Encloses a copy of ONR’s amendment to his contract regarding boron research. Requests his approval of the amendment. [Memo from LP to Walter June 8, 1950] [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.1]
• Memorandum from LP to David Shoemaker. [Filed under LP Correspondence: (Shoemaker, David P.), #363.3]

  June 2, 1950

  To: David Shoemaker

  From: Linus Pauling

  Subject: The sigma phase

  I think that I have worked out a structure of the sigma phase. It is based on the orthorhombic unit proposed by Mr. Paul Pietrokowsky as reported in your communication of May 12, 1950. This is an orthorhombic cell with dimensions a_o = 8.661, b_o = 6.214, and c_o = 5.199 kx with 12 atoms in the unit cell. You mention that the hko’s are present only with h even. I am not sure that this is compatible with my structure.

  With these units, the parameters of the 12 atoms are the following: [List of x, y and z parameters]

  Your communication to me said that there were 12 FeCr in the unit cell; that is, 24 atoms. The other 12 atoms are to be centered around ½ ½ ½ in the same way that these are located around 000. A glide plane is necessary in order to preserve orthorhombic symmetry; but the glide plane must transfer a point at 000 into a point at ½ ½ ½. I judge that it must be a diagonal glide.

  Would you determine the coordinates of the other 12 atoms, by introducing a suitable symmetry element, in such a way that no 2 atoms are closer than about 2.5 Å. Would you also evaluate all interatomic distances - I have not carried out this part of the work in detail.

  This seems to me to be a very nice structure. In fact, it looks so good to me that I feel reasonably sure that Pietrokowsky’s unit is the correct one. I think that the next thing to do, after you have checked the structure, is to calculate intensities. However, I would like to see the coordinates of all of the atoms. I think it would be a good idea to have a model made – perhaps you could put one together, using the technique of stringing small wooden balls on vertical rods. It may be that we should change the parameters a little bit from the values that I have calculated as the first set.

  If this does turn out to be the right structure I shall be pretty pleased.

  Linus Pauling:W

  cc: Mr. Bergman

• Check from AHP to Linda Pauling for $35.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Marie Antionette Company for $14.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Letter from LP to Arthur Miller RE: Accepts his invitation to take part in the radio broadcast. [Letter from Miller to LP, May 31, 1950] [Filed under LP Correspondence: (Miller, Arthur), #246.10]
• Letter from W. H. Eberhardt, Georgia Institute of Technology, to LP RE: Asks LP why their petition for a Chapter of Sigma Xi has been “deferred”. Expresses his opinion on organized, classified research. States that they were looking forward to LP’s visit to Oak Ridge this summer. [Letter from LP to Eberhardt, June 9, 1950] [Filed under LP Correspondence: (Eberhardt, William H.), #106.3]

• Letter from A.F. Harrington, Treasurer, Adohr Milk Farms, Inc. to LP RE: Tells LP that the letter has been turned over to the Pacific Indemnity Company and that he should take up his claim with them. [Letter from LP to Harrington, January 31, 1950 and Letter from LP to Pacific Indemnity Co, June 8, 1950] [Filed under LP Correspondence: (A: Correspondence, 1950), #12.16]
• Letter from A.O. Morse, Assistant to the President, Pennsylvania State College, to LP RE: Explains that the dismissal of Dr. Lorch was in no way determined by the fact that he had invited Negroes to live in his apartment. Dr. Lorch was not reinstated because in their judgement he did not have the qualifications. [Letters from LP to Morse, May 22, 1950 and June 20, 1950] [Filed under LP Correspondence: (M: Correspondence, 1950), #256.1]
• Letter from Dr. P. W. Selwood, Department of Chemistry, Northwestern University, to LP RE: States that he is glad that LP has decided to take part in the lecture series on November 7, 1950. Suggests that LP make the title of his talk, “Valence of Metals and the Nature of Intermetallic Compounds,” and asks if LP is in agreement. Informs LP who else will be taking part in the program and tells LP that he will write him with more details approximately six weeks before November 7, 1950. [Letters from LP to Selwood, June 1, 1950 ad June 13, 1950] [Filed under LP Speeches: 1950s.25]
• Letter from Edward Yardley, Executive Secretary, Committee for Reciprocity Information to LP RE: Thanks him for his letter. [Letter from LP to Yardley, May 31, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from H. S. Gutowsky, Secretary, University of Illinois Section, American Chemical Society, to LP RE: Invites LP to address their group during the next academic year on a subject of his choice. States that many of their members are interested in LP’s work on immunochemistry. Discusses the proposed setup of the lecture. [Letter from LP to Gutowsky, June 13, 1950] [Filed under LP Speeches: 1951s.6]
• Letter from Harper Frantz to LP RE: Informs LP that he has received College Chemistry and plans to use it at City College. [Filed under LP Books: 1950b.2]
• Letter from LP to Florence Chesse, W. H. Freeman & Co., RE: Tells her that the cut near the top of page 443 in General Chemistry is not uniform with the other cuts and suggests that it be made over again. [Letter from Chesse to LP, June 16, 1950] [Filed under LP Books: 1947b6.2]
• Letter from LP to George E. Burch, School of Medicine, Tulane University. [Letters from Burch to LP, April 28, 1950 and June 12, 1950] [Filed under LP Correspondence: (Burch, George E.), #33.8]

  June 5, 1950

  Dr. G. E. Burch

  School of Medicine

  Tulane University

  1430 Tulane Avenue

  New Orleans 12, La.

  Dear George:

  My wife and I had a pleasant trip home. We spent a day at the Petrified Forest National Monument in Arizona. We remember with much pleasure our visit with you in New Orleans.

  Since getting home I have worked out a staple theory of the interaction of sodium and potassium in the flame photometer. First, I have checked some old experimental work by H. A. Wilson, described in a paper in 1922 in the Journal of the American Chemical Society by H. A. Wilson and A. A. Noyes, from which it is evident that the electrons in the flame are due almost entirely to the ionization of the sodium and potassium atoms.

  We may assume that in a flame containing both sodium and potassium there are present sodium atoms in various states (the normal state and various excited states), potassium atoms in various states, sodium ions, potassium ions, and electrons. The distribution of the unionized sodium atoms among the various states is a function of the temperature, but not of the amount of sodium or potassium present. This means that the intensity of the sodium radiation can be taken as proportional to the number of sodium atoms in the normal state and all the various excited states, provided that the temperature remains constant. The same thing is true for potassium. However, there is an equilibrium between the unionized sodium and sodium ions and electrons. This can be expressed by the equation

  Na [in equilibrium with] Na⁺+e^-

  The equilibrium constant for this equation can be taken as K1, which is given by the equation

  [Na⁺][e^-] _________=K₁ [Na]

  Similarly the equilibrium constant for the ionization of potassium can

  Dr. Burch

  be expressed by the equation

  [K⁺][e^-] _________=K₁ [K]

  The total amount of sodium, [Na_t], is equal to the unionized sodium plus the sodium Ions, [Na] + [Na⁺]. Similarly the total amount of potassium, [Kt ] is equal to [K] + [K⁺]

  Electrical neutrality requires that the concentration of electrons be equal to the sum of the concentrations of sodium ion and potassium ion:

  [Na⁺] + [K⁺] = [e^-]

  Now let us introduce I₁, the intensity of the sodium lines, as proportional to the number of unionized sodium atoms, that is,

  I₁ = k₁ [Na]

  We also introduce a similar expression for I₂, the intensity of the potassium line.

  Now by manipulating the quantities, we can derive an equation for the total amount of sodium and for the total amount of potassium in terms of the intensities of the sodium line and the potassium line. This equation is the following:

  [Na_t] = _I₁ _ {1 +_____K₁ _____}

  We can derive a similar expression for the total amount of potassium.

  Not having the observed intensities at hand for your experiments, but instead the apparent amounts of sodium and potassium given by mixtures of the two, making use of the calibrations with sodium alone or potassium alone, I have changed this equation somewhat, for comparison with experiments. Namely, I have replaced I₁ in the equation by the apparent concentration of sodium, and I₂ by the actual concentration of potassium which was added. Similarly in the equation for the total amount of potassium I replaced I₁ in the correction term by the actual amount of sodium that was added.

  Dr. Burch

  It turns out that one can in this way develop an equation that agrees moderately well with your experimental data - better than agreement between the experiments reported in columns 3 and 4. I have not spent much time in an effort to get the best agreement, but I have found that for the experiments in which you had a large amount of added sodium with relatively small amounts of potassium the following equation works reasonably well:

  For example, in the series in which the actual potassium, concentration was 0.200 milliequivalents per liter and the sodium concentration varied from 0 to 50 milliequivalents per liter, the values of K

  app

  were found to vary From 0.200 to 0.515. When corrected by this equation, the values all lie Between 0.19 and 0.22 milliequivalents per liter. With 1.2 milliequivalents per liter of potassium actually present, the sodium concentration varying between 0 and 50 milliequivalents per liter, the apparent values ranged from 1.21 to 1.65 milliequivalents per liter. When corrected by this same equation, the apparent values ranged from 1.19 and 1.23. I think that similar agreement would be obtained for the other values in your table. Also a similar equation can be used to correct the values from the sodium determination in the presence of added potassium.

• Letter from LP to N. A. Parkinson, Assistant to the Editor, Chemical and Engineering News, RE: Submits his review on the book, Theorie und Losungemethoden des Mehrteilchenproblems der Wellenmechanik, by P. Gombas. [Letters from Parkinson to LP, May 23, 1950 and June 13, 1950] [Filed under LP Correspondence: (Chemical and Engineering News), #70.3]
• Letter from LP to Victor Reynolds, Cornell University Press, RE: Inquires how much his royalties will amount to for the current year and when he will receive his royalty check. [Letter from Kerbin to LP June 15, 1950] [Filed under LP Books 1960b5.2]
• Letter from LP to the Gentlemen of McGraw-Hill Book Company, Inc., RE: Inquires when he will receive the royalty checks for the books, Introduction to Quantum Mechanics and The Structure of Line Spectra. [Letter from Handsfield to LP, June 13, 1950] [Filed under LP Books: 1935b.1]
• Letter from Ralph Roberts, Acting Head, Chemistry Branch, Office of Naval Research to Dr. Paul H. Emmett, Senior Fellow, Mellon Institute of Industrial Research, cc: LP RE: Expresses gladness that he has agreed to serve on the Committee on Review and Formulation of Program for Chemistry and Chemical Engineering, tells him that two meetings are planned for October and December. [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.3]
• Notes, Calculations, Diagrams RE: Alloys of type AB2, June 5, 1950. [Filed under LP Science: (Materials re: Electron Theory and the Structure of Metals and Intermetallic Compounds, 1950-1955), Box #5.003, Folder #3.3]

• Letter from Frances Sansbury, Special Assistant, American Chemical Society to LP RE: Requests to know if he is interested in serving on the Committee on Foreign Compendia for 1950. [Letter from Mr. Emery to LP January 13, 1950, Letter from LP to Miss Sansbury June 9, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1938-1950), Box #14.008, Folder #8.3]
• Letter from Frances V. Benner, Special Assistant, American Chemical Society, to LP RE: Encloses the payment for his lecture tour and hopes that it went well. [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.2]
• Letter from Frances V. Benner, Special Assistant, American Chemical Society, to LP RE: Writes that sections of the American Chemical Society in Nebraska, Iowa, Missouri, Arkansas, and Oklahoma have requested LP to be their guest speaker next spring, and the sections of the ACS in Michigan have requested a visit from LP any time from January to May, 1951. [Letter from LP to Frances V. Benner, June 13, 1950] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]]
• Letter from LP to W. H. Freeman RE: Informs him that Prof. Swift will be in Pasadena and will be talking to Freeman. States that he is not interested in signing any contracts right now. [Letters from Freeman to LP, May 29, 1950 and June 9, 1950] [Filed under LP Correspondence: (W. H. Freeman and Company, 1950), #439.8]
• Letter from W. R. Holcomb, Secretary, Research Committee, Parke, Davis & Company, to LP RE: Acknowledges the letter that LP sent concerning the payment for the grant. Informs him that the checks will be quarterly and that they are pleased to hear that LP appointed Dr. Dunitz to the fellowship. [Letters from LP to Holcomb, June 1, 1950 and June 13, 1950] [Filed under LP Correspondence: (Parke, Davis and Company), #310.2]
• Memo from LP to Himself RE: Discusses the magnetic properties of alloys of iron and chromium and of iron and vanadium. [Filed under LP Science: (LP Notes to Self: Scientific, 1941, 1945, 1949-1992), Box #10.003, Folder #3.3]
• Memo from LP to himself RE: Order and Disorder in Ni3Fe. [Filed under LP Science: (LP Notes to Self: Scientific, 1941, 1945, 1949-1992), Box #10.003, Folder #3.3]

• Check from Peter Pauling for $67.13 cash. [Filed under LP Biographical: Personal & Family: (Family Correspondence: Peter Jeffress Pauling, 1939-1953.), Box #5.041, Folder #41.3]
• Check from Peter Pauling to the California Institute of Technology for $111.79. [Filed under LP Biographical: Personal & Family: (Family Correspondence: Peter Jeffress Pauling, 1939-1953.), Box #5.041, Folder #41.3]
• Letter from Dr. E. W. R. Steacie, Director, Division of Chemistry, National Research Council, Canada, to LP RE: States that he is delighted LP is still planning on visiting Canada. States that their secretary, Mr. Page, will write LP with more details in a few weeks. [Letter from LP to Steacie, May 31, 1950 and Letter from Page to LP, July 15, 1950] [Filed under LP Speeches: 1950s.24]
• Letter from E. A. Robinson, Professor of Philosophy, San Jose State College, to LP RE: Invites LP to partake in a survey concerning the value of philosophy as a field for undergraduate study. [Letter from LP to Robinson, June 13, 1950] [Filed under LP Correspondence: (R: Correspondence, 1950), #340.15]
• Letter from Elliott R. Weyer. Charles, Pfizer and Company, Inc., to LP RE: Asks about the possibility of a grant for Caltech’s Division of Biology. [Letters from LP to Weyer, June 1, 1950, June 13, 1950, and Letter from Weyer to LP, June 12, 1950] [Filed under LP Correspondence: (Charles Pfizer and Company, Inc., 1950, 1969), #70.1]
• Letter from Kwang Sik Yuny, from Seoul, Korea, to LP RE: Tells LP about his country, the university that he attends, and his study of chemistry. States that students do not have access to books and asks for LP’s suggestions as to how he can study. Encloses a picture of a Korean market. [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from LP to Akira Aoyama RE: Thanks him for his letter and states that he was pleased to learn of his interest in the nature of the chemical bond. Asks Aoyama to keep him informed of his work.. [Letter from Aoyama to LP, April 23, 1950] [Filed under LP Correspondence: (A: Correspondence, 1950), #12.16]
• Letter from LP to E. C. Kleiderer, Executive Director, Research and Control, Lilly Research Laboratories, RE: Tells him that no staff members retired from active service this year. [Letter from Kleiderer to LP, May 31, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from LP to Elmer A. Benson RE: Thanks him for the letter detailing his plans to reorganize the National Guardian. [Letter from Benson to LP, May 29, 1950] [Filed under LP Correspondence: (National Guardian), #283.6]
• Letter from LP to G. E. Burch, School of Medicine, Tulane University, RE: Agrees to have Dr. Bresler as a research fellow for 1951. [Letters from Burch to LP, May 30, 1950 and June 12, 1950] [Filed under LP Correspondence: (Burch, George E.), #33.8]
• Letter from LP to Gentleman of Youth Argosy RE: recommending Spitzer for applied membership with Youth Argosy. LP notes that since Spitzer had been on a fellowship in the past year that he would benefit from Youth Argosy’s low cost travel. [Letter from Kerridge to LP, May 31, 1950] [Filed under LP Biographical: (Political Issues: Ralph Spitzer: Academic Freedom and Passport Difficulties, 1944-19940, Box #2.034, Folder #34.2]
• Letter from LP to Henry Allen Moe, John Simon Guggenheim Memorial Foundation RE: Explains that he is trying to plan out his speaking schedule next year and would like to combine a trip east for a lecture with the first meeting of the Selection Committee, provided he is invited to serve on it again. Discusses possible dates for the meeting. [Letter from Moe to LP June 13, 1950] [Filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.5]
• Letter from LP to Professor B. D. Cullity, Department of Metallurgy, University of Notre Dame, RE: Thanks him for the letter and reprint of his paper on the compound AuBe. States that he hopes to work on problems related to intermetallic compounds this summer, in particular, the interatomic distances in AuBe. Says that he has not had time to make the calculations and think about the compound. [Letter from Cullity to LP, May 10, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from LP to Professor Calvin L. Stevens, Department of Chemistry, Wayne University, RE: Accepts the invitation to participate in the “Frontiers of Chemistry” lecture series. States that he would prefer to speak on April 16, 1951. Discusses a lecture topic and suggests that a decision be made at a later date. [Letter from Stevens to LP, May 29, 1950 and Letter from Bright to LP, September 19, 1950] [Filed under LP Speeches: 1951s.7]
• Letter from LP to Professor Edward Gerjuoy, Department of Physics, University of Southern California, RE: States that he is pleased to learn about the local meeting of the Society for Social Responsibility in Science on June 23, 1950. Informs them that he will not be able to attend the meeting because he has other commitments. [Letter from Gerjuoy to LP, May 31, 1950] [Filed under LP Peace: (Assorted Peace Groups, (Pe-St)), Box #4.014, Folder #14.4]
• Letter from LP to Richard L. Kenyon, Associate Editor, Chemical and Engineering News, RE: Apologizes for being uncooperative and states that he wishes that he had time to prepare an article. Regretfully declines to write an article because he would not have time to do a good job on it. [Letters from Kenyon to LP, May 31, 1950 and June 22, 1950] [Filed under LP Correspondence: (Chemical and Engineering News), #70.3]
• Letter from LP to Stella Albert, Parke, Davis & Company, RE: Replies to the letter in which she said that she would be sending abstracts and asks her if she would be willing to send them to Dr. Robert B. Corey because he is having a hard time keeping his files in order. [Letter from Albert to LP, June 28, 1950] [Filed under LP Correspondence: (Parke, Davis & Company), #310.2]
• Letter from Robert Cooley, Department of Chemical Engineering, University of Missouri, to LP RE: Asks LP to comment on the possible structure of a compound made up of one molecule of ortho toluidine and two molecules of aniline. Discusses their research further. [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from Robert Cooley, Department of Chemical Engineering, University of Missouri, to LP RE: Informs LP that a fellowship on the Atomic Energy Contract is available for eleven months of service. Lists the other specifications of the fellowship. Discusses LP’s textbooks, General Chemistry and College Chemistry. [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from W. H. Freeman to LP RE: Informs him that he has submitted a bid for the publication of A Sourcebook of Atomic Energy by Samuel Glasstone. [Filed under LP Correspondence: (W. H. Freeman and Company, 1950), #439.8]
• Letter from W. H. Freeman to Samuel M. Moffett, Department of Chemistry, Park College, cc. LP RE: Thanks Moffett for his comments about College Chemistry. In particular, addresses Moffett’s comment relating to atomic theory and electron configuration. Typed Note: “P.S. to Dr. Pauling: If this is incorrect or inadequate, let me have yours, since this question arises often enough for the staff to want a good answer in the file. Bill.” [Letter from LP to Freeman, June 13, 1950] [Filed under LP Books: 1947b6.2]
• Receipt from F.C. Nash & Co. to AHP for $2.33. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]

• Letter from Dr. H. D. Wilde, Humble Oil & Refining Company, to LP RE: States that he read LP’s letter dated June 1, 1950 and he fears that there was some confusion about the lecture scheduling. States that the attendees of the class are at LP’s disposal during the entire time of his visit. States that LP is free to decide how many hours he would like to lecture each day. Tells LP that prior lecturers have not been burdened with confidential material and states that they want their employees to be able to freely discuss their research if the occasion arises. [Letter from LP to Wilde, June 1, 1950, June 13, 1950, and June 21, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from F. J. Allen, Department of Chemistry, Purdue University, to LP RE: Thanks him for his letter. Discusses one of his comments on his book General Chemistry. [Filed under LP Correspondence: (Allen, Fred) #5.3]
• Letter from J. L. Franklin, Humble Oil & Refining Company, to LP RE: Discusses arrangements for LP’s lectures in Bayton, Texas. [Letter from LP to Franklin, June 1, 1950 and June 13, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from LP to David Robison RE: States that he received a letter from W. A. Wooster of the Society for the Protection of Science and Learning, requesting a statement. Asks Robison to send him the information he needs to prepare the statement. [Letter from Wooster to LP, April 19, 1950 and Letter from LP to Wooster, June 8, 1950] [Filed under LP Correspondence: (Wood, Reuben), #438.7]
• Letter from LP to Dr. J. L. Morrison. RE: Apologizes for taking so long to revise his work. Would like the principle set of data. [Reply to Morrison January 31, 1950] [Filed under LP Science: Box #7.001 Folder 1.8]
• Letter from LP to Fred J. Allen, Department of Chemistry, Purdue University RE: Thanks him for his comments on General Chemistry. Discusses one comment in particular about atoms in the sodium chloride crystal. [Letter from Allen to LP, May 31, 1950] [Filed under LP Correspondence: (Allen, Fred, 1950-1954), #5.3 and LP Books: 1947b6.2]
• Letter from LP to G. J. Harris RE: Agrees with him about the importance of discovering and adequately training the relatively few brilliant and creative men. [Letter from Harris to LP, February 24, 1950] [Filed under LP Correspondence: (H: Correspondence, 1950), #166.1]
• Letter from LP to Gentlemen, Cornell University Press, RE: Requests that a copy of The Nature of the Chemical Bond be sent to S. K. Karalis and charged to LP’s account. [Letter from Karalis to LP February 17, 1950] [Filed under LP Books 1960b5.2]
• Letter from LP to Henri A. Levy, Oak Ridge National Laboratory, RE: Informs Levy that he has decided to definitely give up the plan of visiting Oak Ridge. Mentions the newly built swimming pool at his house and how much his family is enjoying it. [follow up letter February 17, 1950] [Filed under LP Correspondence: (L: Correspondence, 1950) #230.16]
• Letter from LP to Miss Margaret McQuirk, Obstetrical Supervisor, Huntington Memorial Hospital, RE: Thanks her and her colleagues for their assistance in providing clinical material for the research being conducted at the Gates and Crellin Laboratories. [Filed under LP Correspondence: (M: Correspondence, 1950), #256.1]
• Letter from LP to Pacific Indemnity Co. RE: Concerns his letter to Adohr Milk Farms. [Letter from LP to Harrington, June 5, 1950] [Filed under LP Correspondence: (A: Correspondence, 1950), #12.16]
• Letter from LP to W. A. Wooster RE: States that he hopes to send Wooster some statements about the Hollywood Ten, the academic freedom issue at the University of California, and other matters within two weeks. Thanks him for the letter and says that he is disturbed by the current situation in the U.S. [Letter from Wooster to LP, April 19, 1950 and Letter from LP to Robison, June 8, 1950] [Filed under LP Correspondence: (Wooster, W. A.), #438.9]
• Letter from W. H. Freeman to LP RE: Encloses a report on General Chemistry by a teacher who has used the text. States that he will be in Pasadena early in the week of July 10, especially for a visit with LP. Tells LP to let him know if he makes any plans to lecture in Sweden that week. Report on Pauling, General Chemistry. June 2, 1950, WHF: RH. [Letter from LP to Freeman, June 13, 1950] [Filed under LP Books: 1947b6.2]
• Letter from William Seifriz, Botanical Laboratory, University of Pennsylvania, to LP RE: Thanks LP for the criticism of his article and the copy of LP’s book, College Chemistry. Inquires if his manuscript will be returned and asks for the title of Landsteiner’s book. [Letters from LP to Seifriz, May 29, 1950 and June 13, 1950] [Filed under LP Correspondence; (Seifriz, William), #361.5]
• Memo from E. C. Watson to LP, RE: Informs him that the contact with the Humble Oil Company would be good. Hopes that LP can cut down in the Chemical Society work and spend more time at the Institute. [LP to Watson, May 26, 1950] [Filed under LP Biographical: Academia: (California Institute of Technology: Administrative Files, 1938-1971.), Box #1.030, Folder #30.8]
• Memo from LP to A.H. Walter RE: Approves the amendment to his ONR contract for Boron research. [Memo from Walter to LP June 2, 1950] [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.1]
• Packaging Slip. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Referee Comments by LP RE: Provides his comments about an article entitled, “The Resonance Energy of Benzene,” by Hornig. [Letter from Noyes to LP, June 2, 1950] [Filed under LP Correspondence: (Journal of the American Chemical Society), #191.1]
• Speech Announcement: “A Discussion of the Social and Scientific Implications of the H Bomb”, Linus Pauling, [with Richard Lipmann] Medical Council of the Arts, Sciences and Professions, June 8, 1950. [Filed under LP Biographical: Scrapbooks, 1946-1950: Box #6.005, Folder 5.58]

• Article: “Riboflavin, Light, and the Growth of Plants” by Arthur W. Galston. [Filed under LP Science: (Research on Biological Specificity, 1973-1996), Box #8.002, Folder #2.6]
• Check from AHP to Anthony Brothers Inc. for $92.19. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Fashion Cleaners for $13.75. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Sue Perry for $8.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Letter from John Sheridan, Department of Physics, Duke University, to LP RE: Informs him that he plans to travel to Los Angeles in the future and would like to meet with LP to discuss his work and the department. [Letter from LP to Sheridan, June 13, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from LP to Alfred W. Kwiecinski RE: Expresses his opinion that it is unlikely that Kwiecinski’s hypothesis is correct or has any significance and provides an explanation. [Letters from Kwiecinski to LP, No Date and June 22, 1950] [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from LP to Dr. Mack C. Fuqua, RE: Writes to say that LP and AHP both enjoyed the visit very much and especially liked the opportunity to meet him and the other members of the Baton Rouge Section of the Society. [Letter from Fuqua to LP, April 12, 1950] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.2]
• Letter from LP to Frances Sansbury, Special Assistant, American Chemical Society RE: Agrees to serve on the Committee on Foreign Compendia, apologizes for the delay in answering. [Letter from Miss Sansbury to LP June 6, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1938-1950), Box #14.008, Folder #8.3]
• Letter from LP to John Pfeiffer, American Association for Scientific Workers, RE: States that he would not mind his name on the ballot for the regional vice president of the American Association for Scientific Workers, but that he may not be able to devote as much time as other candidates. [Letters from Pfeiffer to LP, May 12, 1950 and June 15, 1950] [Filed under LP Correspondence: (P: Correspondence, 1950), #312.5]
• Letter from LP to M. A. Peacock, Department of Geological Sciences, University of Toronto, RE: Discusses more of the bonding energies of the structure. [Letter from Peacock to LP, April 11, 1950 and Note from Peacock to LP, August 8, 1950] [Filed under LP Correspondence: (P: Correspondence, 1950), #312.15]
• Letter from LP to R. P. Mitra, Department of Chemistry, University of Delhi, RE: Tells Mitra that there are a limited supply of funds for fellowships that he is interested in. LP does, however, offer to hold a position in the laboratory open for him. [Letter from Mitra to LP, May 11, 1950] [Filed under LP Correspondence: (M: Correspondence, 1950), #256.1]
• Letter from LP to W. H. Eberhardt, Department of Chemistry, Georgia Institute of Technology, RE: Responds to Eberhardt’s questions about why their petition for a chapter of Sigma Xi was deferred. LP expresses his own opinion that the most important activities of the staff and advanced students in the way of research are those that result from the spirit of free inquiry; classified work is of little value to a university. States that he will be unable to come to Oak Ridge this summer. [Letter from Eberhardt to LP, April 24, 1950 and June 26, 1950] [Filed under LP Correspondence: (D: Correspondence, 1951), #98.16]
• Letter from LP to W.A. Pennington, Chief Chemist and Metallurgist, Carrier Corp, RE: States that they do not have anyone who is interested in carrying out the measurements that Pennington discussed in his letter. Tells Pennington that Caltech doesn’t do industrial research when the company itself is capable of doing the research themselves or hiring a company to do it for them. [Letter from Pennington to LP, April 12, 1950] [Filed under LP Correspondence: (Eberhardt, William H.), #106.3]
• Letter from Norman Davidson to LP RE: Provides schedule of Chem I lectures for terms 1-3. [Filed under LP Books 1950b.6]
• Letter from W. D. Robertson, Institute for the Study of Metals, University of Chicago, RE: Asks for LP’s opinion on heat of hydration on certain chemicals. [Filed under LP Correspondence: (R: Correspondence, 1950), #340.15]
• Letter from W. H. Freeman to LP RE: Thanks LP for the note on Ernest Swift. Says that the doctor has advised him to take it easy and relates his travel plans. States that he hopes Swift is not anxious to make any decision before July and that LP will be pleased to defer the matter until that time. [Letters from LP to Freeman, June 6, 1950 and June 13, 1950] [Filed under LP Books: 1947b6.2]

• Check from AHP to George Taguchi for $150.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Market Basket for $30.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Sue Perry for $7.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]

• Check from AHP to Ray Edwards for $9.74. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to The New Yorker for $11.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Warren Jones for $100.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Check, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from LP to Dakan Engineering Company for $2,000.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Counter Receipt from Bank of America from LP’s Commercial Account for $150.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Interoffice Memorandum: from LP to Sidney Weinbaum. [Filed under LP Science: (Manuscript Notes by Linus Pauling re: Chemical Bonds, 1944-1953), Box #3.005, Folder #5.19]

  CALIFORNIA INSTITUTE OF TECHNOLOGY

  June 12, 1950

  To Sidney Weinbaum

  Subject_____Quantum mechanical calculations.________________________

  I would like you to make some calculations for me by the method described in a paper by L. Pauling and G. W. Wheland, J. Chem. Phys., 1, 362 (1933). I am interested in having calculations of the resonance energy in some free radicals made, similar to those reported in Table III, and using the method described on the preceding page. This calculation is made by considering only unexcited structures; the structures were all given equal weights. But I believe that this is sufficiently good for the purpose.

  The free radicals for which I would like these calculations made are the following:

  1. The radical obtained from a methyl radical, CH₃, by replacing one hydrogen by the butadiene group. In this radical there are 5 significant carbon atoms in a chain. We can describe the structure by placing a double bond between carbon atoms 1 and 2, then a single bond, then a double bond, then a single bond to the last carbon atom, which has a free valence on it. This would be carbon atom number 5. The free valence could, however, be on carbon atom number 3, or on carbon atom number 1, with the double bonds in other positions. The calculations are made by use of a phantom orbital to which the free valence is formally connected.

  2. A benzene ring, with a chain of 3 carbon atoms attached, there being a double bond between the first carbon atom and the second carbon atom, and a free valence on the third carbon atom. This free valence can move on to the first carbon atom or into any one of

  three positions in the benzene ring, by redistributing the four double bonds. There are thus seven structures altogether, the factor 2 coming in for each of the structures in which the free valence is in the side chain.

  3. A naphthalene molecule in which carbon atom number 2 is not considered. The free valence can then be on carbon atom number 1, there being a double bond between carbon atoms 2 and 3 and a completed benzene ring, or in any one of several other positions.

  4. Two benzene rings attached to the same carbon atom. The free valence can be on the central carbon atom, or in any one of three positions in either of the two benzene rings.

  5. A biphenyl group with a carbon atom attached to one of the ortho carbon atoms in one of the benzene rings. This is ortho-biphenyl methyl free radical - the results should be much like those given in the table for para-biphenyl methyl free radical. Would you also carry out the calculation for system number 1 above, using all five structures, instead of just three. Also, using just three, but not with equal weights.

• Letter from Alfred W. Kwiecinski to LP RE: Explains his theory and responds to LP’s objections. Encloses some drawings and his articles. [Letters from LP to Kwiecinski, June 9, 1950 and June 28, 1950] [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from Dr. Emil Ott to Dr. Hermann Heckel RE: Explains that the proposed plans for Chemical Abstract were adopted at the ACS board meeting and that an article will be put in News Edition that will clearly outline the new plan. [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1944-1949), Box #14.009, Folder #9.4]
• Letter from Elliott R. Weyer, Charles, Pfizer and Company, Inc., RE: Denies LP’s request for a grant to the Division of Biology at Caltech. [Letter from Weyer to LP June 7, 1950 and Letter from LP to Weyer, June 21, 1950] [Filed under LP Correspondence: (Charles Pfizer and Company, Inc., 1950, 1969), #70.1]
• Letter from G. E. Burch, School of Medicine, Tulane University, to LP RE: States that he is pleased that LP will be able to take on Dr. Bresler next year. Tells LP that Dr. Bresler is thrilled to have this opportunity and will be contacting LP soon. Indicates that he received LP’s calculations on the flame photometer problem and will contact him after they have studied the data and equations thoroughly. [Letter from LP to Burch, June 7, 1950] [Filed under LP Correspondence: (Burch, George E.), #33.8]
• Letter from Hans Neurath, Department of Biochemistry, Duke University School of Medicine, RE: Asks for LP’s advice about whether or not he should take a job offer to be the Chairman of the Department of Biochemistry at the new medical school in Seattle, Washington. [Letter from LP to Neurath, June 21, 1950] [Filed under LP Correspondence: (Neurath, Hans), #276.8]
• Letter from Kosuke Ohki to LP RE: Conveys his ideas about levels of electrons, charges, and bonds. [Filed under LP Correspondence: (O: Correspondence, 1950), #300.12]
• Letter from Professor Robert J. Havighurst, Chairman of the Executive Board, Committee for Peaceful Alternatives, RE: Expresses their disappointment that LP was unable to participate in the Mid-Century Conference for Peace. Discusses the Conference, the many delegates in attendance, and the results of the elections. Encloses two documents about the event. Asks LP to sign and return the enclosed card indicating that they can count on LP for his counsel in the coming months. [Filed under LP Peace: (Assorted Peace Groups) Box #4.011 Folder #11.1]
• Letter from Walter A. Lawrance, Head of the Department of Chemistry, Bates College, to LP RE: Thanks LP for the courtesies he extended to him during his stay in Pasadena. Expresses his regret that LP was away when he visited his office to say goodbye. States that he hopes to see LP at a future ACS meeting. [Letter from LP to Lawrance, June 21, 1950] [Filed under LP Correspondence: (L: Correspondence, 1950), #230.16]
• Memo from Dr. David E. Price, Chief, Division of Research Grants & Fellowships to LP RE: Explains that his grant-in-aid has been recommended for funding but no action can be taken until the appropriation bill has been passed by Congress and signed by the President. Assures him he will be notified when the bill is enacted. [Letter from Seger to Green March 16, 1950, Letter from LP to Price July 27, 1950] [Filed under LP Science: (United States Public Health Service: “X-Ray Diffraction Investigations of the Structure of Protein Molecules”, grant RG 1987, [changed to H-2143 (Chemistry 1950)], 1948-1958), Box #14.041, Folder #41.1]

• Bill from A.S. Greene Co. to AHP for $17.94. Handwritten note indicates that it was paid. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Bill from Bullock’s for $15.01. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Check from AHP to Athenaeum for $4.80. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Bullocks Pasadena for $89.84. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Dr. Jud R. Scholtz for $12.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Keefer’s Garage for $40.31. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to McBride Animal Hospital for $6.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Mira Loma Mutual Water Company for $12.93. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Pacific Telephone and Telegraph for $20.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Paddock Pool Maintenance Company for $13.75. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Reliable Spray Company for $36.50. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to The Apothecary Shop for $9.62. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Union Oil Company for $10.06. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Invoice from Cornell University Press: 1 copy The Nature of the Chemical Bond sold to LP, shipped to S. K. Karalis. [Filed under LP Books 1960b5.2]
• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Letter dictated by LP to E. A. Robinson, San Jose State College, RE: Answers Robinson’s questions. LP thinks that an undergraduate major in philosophy would not be a fit background for students whose goal is engineering. States that he is unsure about how much time a minor should occupy, but thinks that a student should be able to select studies other than their major. States that he would not recommend any particular philosophy courses for undergraduates whose goal is engineering. [Letter from Robinson to LP, June 7, 1950] [Filed under LP Correspondence: (R: Correspondence, 1950), #340.15]
• Letter dictated by LP to John Sheridan, Department of Physics, Duke University, RE: Thanks him for his letter and states that he trusts that he will be able to spend some time looking at LP’s set-up. [Letter from Sheridan to LP, June 9, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from Albert Fields, Scientific Chairman, Temple Hospital, to LP RE: Thanks him for giving the excellent presentation, “Medical Research at the Cal. Tech” at their hospital. States that he hopes that it could be arranged again and that he is looking forward to visiting LP’s department. [Letter from LP to Fields, June 21, 1950] [Filed under LP Correspondence: (F: Correspondence, 1950), #128.15]
• Letter from Beatrice Wulf, Gates and Crellin Laboratories, to William Seifriz, RE: Gives the title of the requested book and encloses Seifriz’s manuscript. [Letter from Seifriz to LP, June 8, 1950] [Filed under LP Correspondence; (Seifriz, William), #361.5]
• Letter from Dr. Hermann Heckel to Dr. Emil Ott RE: Suggests his own ideas about how to lessen the financial burden placed on the ACS members by the publishing of Chemical Abstracts. [Letter from Mr. Emery to Dr. Heckel June 20, 1950, Letter from Dr. Ott to Dr. Heckel June 23, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1944-1949), Box #14.009, Folder #9.4]
• Letter from Henry Allen Moe, John Simon Guggenheim Memorial Foundation to LP RE: Agrees to set the first meeting of the selection committee as February 9,10,11, 1951, because this way both he and LP can make their plans. Notifies him the Aydelotte is retiring as Chair of the Advisory Board because of poor health and the Louis Wright has been named the new Chair. [Letter from LP to Moe June 7, 1950, Letter from LP to Moe June 21, 1950] [Filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.5]
• Letter from Hugh W. Handsfield, Editor, College Department, McGraw-Hill Book Company, Inc., RE: Informs LP when he should receive his royalty checks and discusses yearly sales for each book. [Letter from LP to McGraw-Hill, June 5, 1950] [Filed under LP Books: 1935b.1]
• Letter from LP [Signed in his absence by Beatrice Wulf], to Frances V. Benner, RE: Writes that he has just been asked to cut back on his American Chemical Society work and pay more attention to business in Pasadena, so he cannot make the three week tour. However, writes that he can spend the week beginning April 30 speaking in Nebraska and Iowa after the National Academy of Sciences meeting. [Letter from Benner to LP, June 6, 1950, Letter from Benner to LP, July 5, 1950] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from LP to B. N. Dickinson RE: Thanks him for the letter and commencement announcement for Neil Jr. Encourages them to visit when they are in the area. LP provides an update about his children. [Filed under LP Correspondence: (D: Correspondence, 1950), #98.15]
• Letter from LP to Dr. H. D. Wilde, Humble Oil & Refining Company, RE: Thanks him for his letter. Tells Dr. Wilde that he has answered all of his questions about the lecture course. States that he looks forward to his visit. [Letter from Wilde to LP, June 8, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from LP to Dr. J. L. Franklin, Humble Oil & Refining Company, RE: Tells him that it is not necessary for each class member to have a copy of Wheland’s book. Accepts the invitation for LP and AHP to have dinner with Dr. and Mrs. Franklin upon their arrival in Texas. States that it will be nice to use the company car. Writes that he will include some of the applications of quantum mechanics in his treatment. [Letter from Franklin June 8, 1950, June 23, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from LP to Dr. P. W. Selwood, Department of Chemistry, Northwestern University, RE: Informs him that he can use the title “Valence of Metals and the Structure of Nonmetallic Compounds” for November 7, 1950. [Letters from Selwood to LP, June 5, 1950 and September 27, 1950] [Filed under LP Speeches: 1950s.25]
• Letter from LP to Elliott R. Weyer, Charles, Pfizer and Company, Inc., RE: Inquires about the grant request made by LP on behalf of the Division of Biology at Caltech. [Letter from Weyer to LP, June 7, 1950] [Filed under LP Correspondence: (Charles Pfizer and Company, Inc., 1950, 1969), #70.1]
• Letter from LP to H. S. Gutowsky, Secretary, University of Illinois Section, American Chemical Society, RE: States that he would like to visit Urbana to speak before the local ACS section. Inquires if April 17 or 18, 1951 would be satisfactory. [Letters from Gutowsky to LP, June 5, 1950 and July 10, 1950] [Filed under LP Speeches: 1951s.6]
• Letter from LP to W. F. Holcomb, Secretary, Research Committee, Parke, Davis & Company, RE: Thanks him for his recent letter and that he has recommended to the board of trustees that Dr. Dunitz be given the title of Parke, Davis and Company Fellow. [Letter from Holcomb to LP, June 6, 1950] [Filed under LP Correspondence: (Parke, Davis & Company), #310.2]
• Letter from LP to W. H. Freeman RE: Says that Freeman’s statement to Dr. Moffett seems just right. Thanks him for the report on General Chemistry and says that he will address those points when he revises the text. Says that he is sorry that Freeman has to “take it easy” at his doctor’s orders. Tells him that Ernest Swift is not anxious to make a decision and that he will not make one for a year or more, until the manuscript is finished. [Letter from Freeman to Moffett, June 7, 1950, Letters from Freeman to LP, June 8, 1950 and June 9, 1950] [Filed under LP Books: 1947b6.2]
• Letter from N. A. Parkinson, Assistant to the Editor, Chemical and Engineering News, to LP RE: Thanks LP for the review and states that they hope to publish it in an early issue of Chemical and Engineering News. [Letter from LP to Parkinson, June 5, 1950] [Filed under LP Correspondence: (Chemical and Engineering News), #70.3]
• Letter from Paul H. Emmett to LP RE: Thinks it is time for Haldeman to publish the adsorption measurements and surface area measurements that he made on the silica gel samples. Asks for LP’s opinion on how Haldeman and Dickey publish their separate papers. There is LP’s hand-written comments at the top of the letter - “Dr. Dickey, What do you think?” [Letter from LP to Emmett, July 13, 1950] [Filed under LP Correspondence: (Emmett, Paul) #109.1]
• Memo from R. B. Gilmore to LP cc. Dr. J. H. Sturdivant, Mrs. Arletta Townsend RE: Informs him that they received a check from Parke, Davis, & Company for $1250 to cover the first quarter of 1950-1951. [Filed under LP Correspondence: (Parke, Davis & Company), #310.2]
• Note from E. E. Mirsky, Rockefeller Institute for Medical Research, to LP RE: Tells LP that by the time his letter arrived, they had decided upon Jane Oppenheimer, a biologist at Bryn Mawr College. [Filed under LP Correspondence: (Mirsky, A. E.), #248.3]

• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Letter from Henry Allen Moe, John Simon Guggenheim Memorial Foundation to Milton Goldstein, cc: LP RE: Encourages him to contact LP because LP had some suggestions to help him with the research he is doing under his fellowship. [Filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.5]
• Letter from William Cochran, Crystallographic Laboratory, Cavendish Laboratory, Cambridge, to LP RE: States that he received an invitation from Professor Pepinsky to spend a few months in his laboratory and that he is contemplating applying for a Rockefeller Foundation fellowship. States that he would like to spend half of his time in LP’s laboratory and asks for LP’s assistance in finding him a laboratory. Says that he will write LP with more information. [Letter from LP to Cochran, June 21, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]

• Check from AHP to Dr. Robert I. Boyd for $6.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Letter from B. H. Sage to LP RE: Thanks LP for sending a copy of his book, College Chemistry. [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from John Pfeiffer, American Association of Scientific Workers, to LP RE: States that he is glad to put LP’s name on the At the request of Melba Phillips, inquires about putting LP’s name on the ballot for regional vice president of the American Association of Scientific Workers. [Letter from LP to Pfeiffer, June 9, 1950] [Filed under LP Correspondence: (P: Correspondence, 1950), #312.5]
• Letter from Peter Debye, Department of Chemistry, Cornell University, to LP RE: Encloses a letter from the High Council for Scientific Investigations concerning the possibility of Portoles working in LP’s laboratory. Inquires if LP is willing to receive Portoles in his laboratory. [Letter from LP to Debye, June 21, 1950] [Filed under LP Correspondence: (Debye, Peter: Correspondence, Reprints), #90.1]
• Letter from Virginia Kerbin, Cornell University Press, to LP RE: Informs him that the bookkeeping department is currently calculating LP’s royalties for the current fiscal year. Explains that definite figures will be available by July. [Letter from LP to Reynolds June 5, 1950] [Filed under LP Books 1960b5.2]
• Speech Program: No Title, dedication ceremonies of the Nathan Goldblatt Memorial Hospital, June 15, 1950. [Filed under LP Biographical: Scrapbooks, 1946-1950: Box #6.005, Folder 5.56]

• Bill from the Pacific Telephone and Telegraph Company to LP for $10.54. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Invoice from the Paddock Pool Maintenance Co. to Linda Pauling: Bill her $8.65 for 12 gallons of Sterilox. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Letter from Alden H. Emery, Executive Secretary, American Chemical Society, to LP RE: Writes that the Directors were sorry he could not attend the latest Board of Directors meeting in New York. Also writes that they are sending under separate cover a souvenir that Dr. Thomas had for him and a copy of the meeting minutes is being sent to him also. [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from Florence S. Chesse, W. H. Freeman & Co., to LP RE: Agrees with LP that the cut on page 443 of General Chemistry is wrong and states that they will fix the problem. [Letter from LP to Chesse, June 5, 1950] [Filed under LP Books: 1947b6.2]
• Letter from Jean Stanford, W. H. Freeman & Co., to Beatrice Wulf, Executive Secretary, Gates and Crellin Laboratory, RE: Explains the confusion surrounding the sending of a copy of College Chemistry to George Kenny. [Filed under LP Books: 1950b.2]
• Letter from Joseph S. Lukesh, Knolls Atomic Power Laboratory, General Electric Company, RE: Apologizes for the delay in his response. States that he recently returned to the graphite problem, discusses his observations, and encloses some photographs. Presents his ideas on this subject and asks for LP’s comments and suggestions. [Letter from LP to Lukesh, October 5, 1950] [Filed under LP Correspondence: (Lukesh, Joseph S.), #218.9]

• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Letter from Jay Stewart, President, Phi Lambda Upsilon (Honorary Chemical Society), Ohio State University, to LP RE: States that they are happy that LP has accepted their invitation to be the Phi Lambda Upsilon lecturer at Ohio State next year. Acknowledges LP’s letter dated June 1 and states that they will contact LP with more information at a later date. States that the February date LP suggested is satisfactory. [Letter from LP to Stewart, June 1, 1950] [Filed under LP Speeches: 1951s.3]
• Newspaper Article Copy: “Physicist Seized as Red Perjurer,” The New York Times, in reference to the government’s seizure of Dr. Sidney Weinbaum on three counts of perjury and fraud for denying past involvement with the Communist party. [Filed under LP Correspondence: (Weinbaum, Sidney, 1950), #433.5] [Also filed under LP Personal Safe, Drawer #2, Folder #2.006]
• Newspaper Clipping: “Science Speeds Search for Blood Substitute”, Pasadena (California) Star-News, June 17, 1950. [Filed under LP Biographical: Scrapbooks, 1946-1950: Box #6.005, Folder 5.58]

• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Note from Dr. Ruth H. Ellis, Department of Chemistry, Vassar College to LP RE: Notifies him that she would like to nominate Dr. Helen French for the Garvan Medal and seeks his help in obtaining the nomination. [Letter from LP to Ellis June 21, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1948-1951, 1967), Box #14.010, Folder #10.1]

• Article: the cover story about Edward C. Kendall. Printed in Chemical and Engineering News. [Filed under LP Science: (Research on Biological Specificity, 1973-1996), Box #8.002, Folder #2.6]
• Check from LP to H.B. Bennett for $414.28. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Itinerary: Chicago [Filed under LP Travel: Box #1.001, Folder 1.8]
• Letter from Oscar M. Helmer, Lilly Laboratory for Clinical Research, to LP RE: Tells LP that Lois, Eric and he will be in Pasadena around July 24-26 and they wish to call on him. [Letter from LP to Helmer, June 26, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from Professor Robert J. Havighurst, Chairman of the Executive Board, Committee for Peaceful Alternatives, to Initiating Sponsors of the Mid-Century Conference for Peace RE: Thanks all of the Initiating Sponsors for their involvement in the Conference. Encloses materials about the Conference. Discusses the 719 delegates that came from 29 states, the District of Columbia, and the Territory of Hawaii to participate in the Conference. Discusses the Conference and what happened there in great detail. [Filed under LP Peace: (Assorted Peace Groups. (Co-Ev)), Box #4.011, Folder #11.1]
• Letter from the Frederick L. Stone, Chief, Office of Research Fellowships at the Public Health Service to Dr. Frixos Charalampous, cc. LP RE: Denies his request for a Postdoctorate Research Fellowship. [Letter from Charalampous to LP, June 25, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Memo from A.H. Walter to LP RE: Encloses a fully executed copy of amendment 1 to N6onr-24432 and explains that it sets 40% of salaries as fixed rate. [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.13]
• Memo from A.H. Walter to LP RE: Forwards a copy of amendment number 2 to N6onr-24423 for his files and reminds him that it establishes 40% of salaries as fixed rate. [Memo from Walter to Gilmore June 28, 1950] [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.1]

• Bill from the Southern California Edison Company to LP for $23.90. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Letter from Alden H. Emery, Executive Secretary, American Chemical Society to Dr. Hermann Heckel RE: Explains that the proposal submitted by the committee in charge of reducing costs of publications was very similar to his own proposals but simpler. [Letter from Heckel to Ott June 13, 1950, Letter from Ott to Heckel June 23, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1944-1949), Box #14.009, Folder #9.4]
• Letter from Alden H. Emery, Executive Secretary, American Chemical Society, to Dr. E. H. Volwiler, American Chemical Society, Abbot Laboratories, RE: Asks how he would like to handle the matter of finding a representative for the Congress in Europe since he is unsure whether anyone will be in Europe at that time and it is too late to put an announcement in Chemical and Engineering News. [Letter from Volwiler to Emery, June 26, 1950] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from Bishambhar Dayal Saksena, Department of Physics, Pennsylvania State College, to LP RE: Requests a reprint of his paper on, “Compressibilities, Force-Constants, and Interatomic distances of Elements in the Solid State.” Asks for LP’s opinion of piezo-electric constants of quartz. [Letter from LP to Saksena, June 30, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from John M. Lee to Speakers Division, Art, Sciences, and Professions Council, to LP RE: Inquires if LP is available to speak at a peace meeting arranged by a group of representative citizens of the Eastside community. [Letter from LP to Lee, June 30, 1950] [Filed under LP Correspondence: (L: Correspondence, 1950), #230.16]
• Letter from LP to A. O. Morse, Assistant to the President, Pennsylvania State College, RE: Thanks him for the letter and says that the statement given by the Acting President is satisfactory. Agrees with him that the university should retain the right of independent selection of staff members until they have obtained tenure. Asks for clarification on an article that appeared in the enclosed Teachers Bulletin, May 1950. [Letter from Morse to LP, June 5, 1950] [Filed under LP Correspondence: (M: Correspondence, 1950), #256.1]
• Letter from Leslie E. Sutton, Magdalen College, Oxford, to LP RE: Inquires if LP can satisfy the requests for reprints, as mentioned in a recent letter. Discusses a special symposium on electron diffraction with special reference to gases and liquids. Handwritten notes between LP and Verner Schomaker. [Filed under LP Correspondence: (Sutton, Leslie E.), #370.8]
• Letter from Ralph Wyckoff to LP RE: Congratulates LP on his book, College Chemistry. [Letter from LP to Wyckoff June 26, 1950] [Filed under LP Books: 1950b.2]
• Memo from LP to Dean Watson RE: Requests that Frixos Charalampous be appointed a Research Fellow in Chemistry without stipend. [Letter from Charlampous to LP, June 26, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Receipt from the Union Oil Company of California to LP for $17.38. Attached are a series of receipts from April and May. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]

• Bill from the Southern Counties Gas Company of California to LP for $14.96. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Check from AHP to Carrousel Clothes for $30.84. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from LP to Braun Corporation for $15.45. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Letter from Charles D. Wagner, Vice President, Association of Industrial Scientists, to LP RE: Invites LP to speak at their next semi-annual dinner meeting in late July or early August. Encloses some recent bulletins. There is a note in blue ink in the upper margin: “Ansd No.” [Filed under LP Correspondence: (A: Correspondence, 1950), #12.16]
• Letter from Denis L. Fox, Scripps Institution of Oceanography, University of California at La Jolla, to LP RE: Compliments LP on his excellent new text, College Chemistry. Discusses his publications in the Cambridge Press and his difficulty getting a little volume printed. States that he would like to bring his sons to LP’s lecture series on the contemporary problems in several branches of sciences. [Filed under LP Correspondence: (Fox, Denis), #120.2]
• Letter from Gordon Kahn to LP RE: Sends him some material associated with freeing the Hollywood Ten. Includes two amicus curiae briefs and a chronology. [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from Hans Neurath, Department of Biochemistry, Duke University School of Medicine, to LP RE: States that he too would be strongly attracted by the offer. [Letters from Neurath to LP, June 13, 1950 and July 13, 1950] [Filed under LP Correspondence: (Neurath, Hans), #276.8]
• Letter from LP to Albert Fields, Scientific Chairman, Temple Hospital, RE: Thanks him for the letter and states that he enjoyed his visit to Temple Hospital. Suggests that Fields visit their department during the academic year, possibly during the fall. [Letter from Fields to LP, June 13, 1950] [Filed under LP Correspondence: (F: Correspondence, 1950), #128.15]
• Letter from LP to Alden H. Emery, Executive Secretary, American Chemical Society. [Letter from LP to Ellis June 21, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1948-1951, 1967), Box #14.010, Folder #10.1]

  June 21, 1950

  Mr. Alden H. Emery

  American Chemical Society

  1155 Sixteenth Street, N.W.

  Washington 6, D.C.

  Dear Mr. Emery:

  I am pleased to give strong support to the nomination of Dr. Helen French of Vallesley College for the Garvan Medal.

  I have known Dr. French for many years. She spent one year as Research Fellow at the California Institute of Technology, on leave of absence from Wellesley College. During this period she made a careful investigation of the magnetic properties of some complex cyanides. The problem was a very difficult one, which she attacked with vigor and effectiveness.

  Miss French has a fine mind, and has, throughout her career, contributed significantly to chemical teaching and research.

  Sincerely yours,

  [Linus Pauling]

• Letter from LP to B. Herrod RE: Thanks Herrod for his letter and the pamphlet. Agrees with him that it is essential to consider the basic structures on which our civilization is built. Attaches an article that he wrote entitled, “Facts,” which contains a message of peace. [Filed under LP Correspondence: (H: Correspondence, 1950), #166.1]
• Letter from LP to Dr. H. D. Wilde, Humble Oil & Refining Company, RE: Returns the signed copy of the letter agreement between Humble Oil & Refining Company and himself. [Letter from Wilde to LP, June 8, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from LP to Dr. Ruth H. Ellis, Department of Chemistry, Vassar College RE: Agrees to recommend Dr. Helen French for the Garvan Medal and sends copies of his letter doing so. [Note from Ellis to LP June 18, 1950, Letter from LP to Mr. Emery June 21, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1948-1951, 1967), Box #14.010, Folder #10.1]
• Letter from LP to Elliott Weyer. RE: Thanks him for his letter. Might try again next year. [Reply to Weyer June 12, 1950] [Filed under LP Correspondence: (Charles Pfizer and Company, Inc.) #70.1]
• Letter from LP to Henry Allen Moe, John Simon Guggenheim Memorial Foundation RE: Thanks him for setting the dates of the next meeting and regrets that Aydelotte has to retire but supports the appointment of Louis Wright. Expresses his frustration at the arrest of Sidney Weinbaum, who he believes does not get involved in political activities. Suggests that if his duties permit, Professor M.A. Peacock would be a good person to award a fellowship. [Letter from Moe to LP June 13, 1950] [Filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.5]
• Letter from LP to Peter Debye, Department of Chemistry, Cornell University, RE: Accepts Portoles for a fellowship at Cal. Tech. [Letter from Debye to LP, June 15, 1950] [Filed under LP Correspondence: (Debye, Peter: Correspondence, Reprints), #90.1]
• Letter from LP to T. Katsurai RE: Thanks him for sending a copy of the Japanese edition of Quantum Mechanics. Congratulates him and the three other translators. [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from LP to W. F. Holcomb, Secretary, Research Committee, Parke, Davis & Company, RE: Replies to the letter that was sent on June 12th (missing letter). Informs him that July 1, 1950 would be the starting date for the fellowship at California Institute of Technology. Thanks them for the fellowship. Handwritten note: “Letter from Holcomb given to [Dr.] Green.” [Letter from LP to Holcomb, June 21, 1950] [Filed under LP Correspondence: (Parke, Davis & Company), #310.2]
• Letter from LP to Walter A. Lawrance, Head of the Department of Chemistry, Bates College, RE: Expresses his regret that Lawrance’s visit was during a period when he was so busy and out of town a lot. States that he hopes Lawrance’s visit to Pasadena was worthwhile. [Letter from Lawrance to LP, June 21, 1950] [Filed under LP Correspondence: (L: Correspondence, 1950), #230.16]
• Letter from LP to William Cochran, Crystallographic Laboratory, Cavendish Laboratory, Campbridge, RE: Discusses their current research and inquires what phases of x-ray crystallography he would be interested in studying. Asks Cochran to write him with more information. [Letter from Cochran to LP, June 14, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from W. F. Libby, Institute for Nuclear Studies, University of Chicago, to LP RE: Apologizes that he was not in the laboratory on Monday and says that there was a sudden illness in his family. States that he would like to talk with LP at greater length, especially about the sample that LP mentioned. Inquires whom he can approach about this matter. [Letter from LP to Libby, June 26, 1950] [Filed under LP Correspondence: (Libby, W. F.), #217.2]

• Bill from F.C. Nash & Co. for $13.77. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Handwritten notes by LP, RE: Says that Dean Watson phoned him at around 10 A.M. saying that the L.A. Examiner made an attack on LP that morning and that he was busy with his work from 10 A.M. - 2:45 P.M. [Filed under LP Personal Safe, Drawer #2, Folder #2.039]
• Letter from Alden H. Emery, Executive Secretary, American Chemical Society, to Board of Directors, American Chemical Society, RE: Attaches a copy of the minutes of the recent Board of Directors meeting and asks for their comments. [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from Edward S. Kitch, The Associated Press, to LP RE: Encloses a report that he wrote after he attended LP’s lecture on the future of “Molecular Medicine” in the Nathan Goldblatt Memorial Hospital. Requests that LP write about 500 words explaining the underlying reasons for his theory and give some examples to make the story more understandable. [Letter from LP to Kitch, August 2, 1950] [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from LP to Cyril Smith, Institute for the Study of Metals, University of Chicago, RE: Discusses his findings on the polyhedra that could be constructed on the basis of certain postulates. Encloses a memo of polyhedra prepared by Dr. F. J. Ewing. [Letter from Smith to LP, June 26, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from LP to Kurt Mislow, Department of Chemistry, New York University, RE: Offers his advice on whether Mislow should stay at NYU. Includes information about an opening at Yale. [Notes from Mislow to LP, May 5, 1950, May 19, 1950 and June 28, 1950] [Filed under LP Correspondence: (Mislow, Kurt), #248.4]
• Letter from LP to P. Auger, Head of the Department of Natural Sciences, UNESCO, RE: Encloses the signed copy of the contract offered by UNESCO. Informs him that he has been traveling in the southern U.S. for the past few months and would still like to write the report even though the due date has been long expired. Asks if he could be able to extend the date to August 15, 1950. [Letters from Auger to LP, January 17, 1950 and July 4, 1950] [Filed under LP Correspondence: (United Nations Educational, Scientific, and Cultural Organization (UNESCO)), #420.2]
• Letter from Richard L. Kenyon, Associate Editor, Chemical and Engineering News, to LP RE: States that he was very disappointed to learn that LP is hesitant to commit to writing an article. Discusses the importance of the series and tries to get LP to reconsider his decision. [Letters from LP to Kenyon, June 7, 1950 and August 12, 1950] [Filed under LP Correspondence: (Chemical and Engineering News), #70.3]
• Letter from the Bank of American Lake Green Branch to Peter Pauling, RE: Informs him that his account was overdrawn by $0.50. [Filed under LP Biographical: Personal & Family: (Family Correspondence: Peter Jeffress Pauling, 1939-1953.), Box #5.041, Folder #41.3]
• Letter from the Executive Secretary, Gates and Crellin Laboratories, California Institute of Technology, to L. B. Pope, Associate Editor, Chemical Engineering, RE: Writes that LP asked her to send him the review that he prepared for the book, Progress in Biochemistry - A Report on Biochemical Problems and on Biochemical Research Since 1939, by Felix Haurowitz. States that the other review will be sent later for one of the books Pope had requested. [Typescript, No Date, Letter from Pope to LP, May 5, 1950, and Letter from LP to Pope, May 16, 1950] [Filed under LP Manuscripts of Articles: 1950a.12]
• Newspaper Clipping: “Activities of Caltech’s Pauling Spotlighted”, Los Angeles Examiner, June 22, 1950. [Filed under LP Biographical: Scrapbooks, 1946-1950: Box #6.005, Folder 5.59] and [Filed under LP Newspaper Clippings: 1950n.10]

• Letter from Dr. Emil Ott to Dr. Hermann Heckel, cc: LP RE: Comments that is his only addition to Emery’s earlier letter is that the adopted plan charges foreign users in the same manner as US users. [Letter from Heckel to Ott June 13, 1950, Letter from Emery to Heckel June 20, 1950] [Filed under LP Science: (American Chemical Society: Materials re: Committees and Awards, 1944-1949), Box #14.009, Folder #9.4]
• Letter from Dr. J. L. Franklin, Humble Oil & Refining Company, to LP RE: States that LP and AHP are free to join Mrs. Franklin and him for dinner and writes that they will make more detailed plans later. Informs LP that he has arranged for them to stay in a small apartment at the Jack Tar Courts in Galveston. [Letter from LP to Franklin, June 13, 1950, and June 30, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from G. W. Beadle to E. C. Kleiderer, Executive Director, Research and Control, Lilly Research Laboratories, cc LP RE: Thanks the Lilly Research Laboratory for their support of Professor Borsock’s peptide project. Suggests that the check be sent to G. W. Green, the business manager of Caltech. States that the official and formal thanks from President DuBridge would be sent in a few weeks. [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from LP to Erving C. Kleiderer, Executive Director, Research and Control, Lilly Research Laboratories, RE: Asks for information about how to send the samples of ACTH to Eli Lilly Research Laboratory for the assay. Attaches a memo from R. B. Corey reminding him what information should be obtained from Eli Lilly Lab. for the samples. [Letter from Kleiderer to LP, June 28, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from LP to Erving C. Kleiderer, Executive Director, Research and Control, Lilly Research Laboratories, RE: Submits his partial cost of transportation to Indianapolis of $155.00. [Letter from Kleiderer to LP, June 28, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Memo from Henry Allen Moe, Simon Guggenheim Memorial Foundation, to Dr. Beadle and LP RE: Encloses a letter from Dr. Terry that has the data for the study on which they are working. [Filed under LP Correspondence: (T: Correspondence, 1950), #410.15 also filed under LP Science: (John Simon Guggenheim Memorial Foundation, 1946-1952), Box #14.014, Folder #14.5]
• Note from B. Herrod to LP RE: Discusses peace-related matters, the H-bomb, and other topics. [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Note from Elizabeth Chandler to LP RE: Thanks him for speaking at the Peace Meeting on July 7, 1950. Gives him information regarding the engagement. [Filed under LP Speeches: 1950s.18]

• Bill from A.C. Vroman, Inc. for $16.94. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Note from [Willeta] Dulaney to LP RE: Discusses various matters. [Filed under LP Correspondence: (D: Correspondence, 1950), #98.15]

• Bill from Athenaeum to LP for $13.29. Handwritten note indicates that it was paid. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Handwritten notes by LP on Academic Freedom, June 25 - 26, 1950. [Filed under LP Personal Safe, Drawer #1, Folder #2.006]
• Letter from Frixos Charalampous, Institute for Enzyme Research, University of Wisconsin, to LP RE: Notifies LP that Charalampous’ request for a fellowship renewal was denied. [Letter from Stone to LP, June 19, 1950 and Letter from LP to Charalampous, June 28, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from William F. Leuenberger to LP RE: Discusses his unfortunate situation as a immigrant scientist from Sweden. Asks for LP’s opinion why he could not find a permanent employment in United States. Encloses a copy of his resume along with the letter. [Letter from LP to Leuenberger, July 5, 1950] [Filed under LP Correspondence: (L: Correspondence, 1950), #230.16]

• Bill from Herbert A. Whipple, D.D.S. to LP for $3.00. Handwritten note indicates that it was paid. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Check from AHP to Dr. James H. Britton for $6.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Polytechnic Elementary School for $25.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Polytechnic Elementary School for $3.50. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Southern Counties Gas Company for $14.96. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to The Westridge School for $10.36. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Invoice from A.S. Greene Company to AHP: Says that her balance due is $17.94. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Letter from B. F. Poshkus, Secretary to C. S. Smith, Institute for the Study of Metals, University of Chicago, RE: Thanks him for the letter discussing F. J. Ewing and Robert Smith’s work on polyhedra. [Letter from LP to Poshkus, June 22, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from E. H. Volwiler, Abbott Laboratories, American Chemical Society, to Alden H. Emery, American Chemical Society, RE: Writes that since he mentioned it would be too late to put an announcement in Chemical and Engineering News, unless they can think of someone who will be in Europe at the time of the congress, they will have to pass up the matter. Also writes that he is sending copies to Howell Furman and LP in the hope that they know of someone who might be in Europe then. [Letter from Emery to Volwiler, June 20, 1950, Letter from LP to Emery, June 30, 1950] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from LP to Dr. Terry RE: States that he is afraid that the investigation on sickle cell anemia would have involved so much effort that it would be impractical for Terry to carry it out. Suggests that he conduct a study on sickle cell anemia and the Jamaicans since he just completed some tests there. [Note from Terry to Beadle, April 9, 1950 and Note from Terry to LP, July 5, 1950] [Filed under LP Correspondence: (T: Correspondence, 1950), #410.15]
• Letter from LP to Oscar M. Helmer, Lilly Laboratory for Clinical Research, RE: Invites them to stay at LP’s house in Pasadena and gives them driving directions. [Letter from Helmer to LP, June 19, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from LP to Ralph Wyckoff RE: Expresses thanks for his comments on College Chemistry and for providing the electron micrographs. [Letter from Wyckoff to LP June 20, 1950] [Filed under LP Books: 1950b.2]
• Letter from LP to W. F. Libby, Institute for Nuclear Studies, University of Chicago, RE: States that he is sorry that he was unable to meet with Libby but that he understands and he got along well with Dr. Arnold. Provides information about the sample Libby mentioned and suggests that he contact Hjalmar Rued Holand. [Letter from Libby to LP, June 21, 1950 and Letter from Libby to Hjalmar, cc. LP, June 30, 1950] [Filed under LP Correspondence: (Libby, W. F.), #217.2]
• Letter from N. A. Parkinson, Assistant to the Editor, Chemical and Engineering News, to LP RE: Inquires if LP will prepare a review on the book, Out of My Later Years, by Albert Einstein. [Letter from LP to Parkinson, July 5, 1950] [Filed under LP Correspondence: (Chemical and Engineering News), #70.3]
• Letter from R. R. Roberts to LP, RE: Tells LP that they were happy to have a visit from his son and AHP today and that he is enclosing AHP’s check to him for $2,000.00. Handwritten note: “85 S. Lake.” [Filed under LP Biographical: Business and Financial: (Bank Statements and Canceled Checks: Bank of America, June, 1964 - April, 1966; Correspondence: Bank of America, 1950.), Box #4.020, Folder #20.3]
• Letter from W. H. Eberhardt, Department of Chemistry, Georgia Institute of TEchnology, to LP RE: Expressing his regret that LP will not be able to visit Oak Ridge and his dissatisfaction with their town management. Thanks LP for his comments about the matter of a Sigma Xi Chapter at Georgia Institute of Technology and states that he had the same feelings concerning sponsored research and classified research. Compliments LP’s on his new textbook, College Chemistry. [Letter from LP to Eberhardt, June 9, 1950] [Filed under LP Correspondence: (Eberhardt, William H.), #106.3]
• Memo from LP to Dean Watson RE: Asks that his request for a Postdoctorate Research Fellowship for Frixos Charalampous be withdrawn. Attaches a memo from the Dean of Faculty to L.A. DuBridge, cc: LP, about the character of Dr. Charalampous. [follow up to LP June 20, 1950] [Filed under LP Correspondence, (C: Correspondence, 1950) #74.18]

• Letter from R. C. Halter, Vice-President, The Society of Professional Chemists and Engineers, to LP RE: Asks if he could address them on a topic related to the professional and economic status of Chemists and engineers while in town visiting the Humble Oil Company. [Letter from LP to Halter, July 6, 1950] [Filed under LP Speeches: 1950s.19]

• Article: “Vitamin E Deficiency in Chicks” by Leona Zacharias, Paul Goldhaver, and V. Everett Kinsey. [Filed under LP Science: Box #11.073, Folder #73.1]
• Check from AHP to George Taguchi for $132.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Check from AHP to Sue Perry for $15.00. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• Letter from A. E. Trueman, University Grants Committee, to LP RE: Regrets not being able to come to Pasadena, but states that a senior member of his committee will be traveling near there and would like to see Caltech. [Letter from LP to Trueman, July 6, 1950] [Filed under LP Correspondence: (P: Correspondence, 1950), #312.15]
• Letter from A. Fleischer, Research Director of the Nickel Cadmium Battery Corporation, to LP, RE: Explains that he is not surprised about the difficulty of finding information about the active materials used in the alkaline nickel-cadmium battery. Notes a paper on the negative active materials and discusses an electrolytic procedure described in the PB reports. Encloses two papers and mentions the advantage of nickel-cadmium batteries. [Letter from LP to Fleischer, July 6, 1950] [Filed under LP Personal Safe, Drawer #2, Folder #2.009]
• Letter from Alden H. Emery, Executive Secretary, American Chemical Society, to Board of Directors, RE: Attaches two copies of two proposed amendments prepared in accordance with the minutes of the recent Board of Directors meeting and requests their signature on one copy, the other is for their records. [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from E. C. Kleiderer, Executive Director, Research and Control, Lilly Research Laboratories, to LP RE: Tells LP that his transportation expense of $155 would be reimbursed by their financial division. Says that Dr. Van Abeele will reply to his question on how to send the samples to ACTH. [Letter from LP to Kleiderer, June 23, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from Fred Okrand to LP RE: States that he sent the letter that they recently discussed to the Los Angeles Examiner by registered mail, return receipt requested. [Postcard from the Post Office Department to LP, June 30, 1950] [Filed under LP Correspondence: (O: Correspondence, 1950), #300.12]
• Letter from LP to Alfred W. Kwiecinski RE: Disagrees with his theory of electronic structures and expresses his opposition to Kwiecinski’s paper being published in the U.S. [Letter from Kwiecinski to LP, June 22, 1950] [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from LP to Frixos Charalampous, Institute for Enzyme Research, University of Wisconsin, RE: Concerns his application for a renewal of his Public Health Fellowship. States that he was sorry to learn that Charalampous was not approved. [Letters from Charalampous to LP, June 25, 1950 and July 1, 1950] [Filed under LP Correspondence: (C: Correspondence, 1950), #74.18]
• Letter from LP to W. H. Freeman, W. H. Freeman & Co., RE: Suggests that he may be interested in comments by Professor Toole on General Chemistry. [Filed under LP Books: 1947b6.2]
• Letter from Stella Albert, Research Librarian, Parke, Davis & Company, to LP RE: Grants his request to have the abstracts sent to Dr. Corey. [Letter from LP to Albert, June 7, 1950] [Filed under LP Correspondence: (Parke, Davis & Company), #310.2]
• Memo from A.H. Walter to R.B. Gilmore, cc: LP RE: Notifies him that they have received a fully executed copy of amendment 3 to N6onr-24423 which extends the termination date and adds funds to the award. [Memo from Walter to LP June 19, 1950] [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.1]
• Note from Kurt Mislow, Department of Chemistry, New York University, to LP RE: Regrets to say that he does not think he is qualified enough for the position at Yale so he will remain at NYU. for another year. [Letter from LP to Mislow, June 22, 1950] [Filed under LP Correspondence: (Mislow, Kurt), #248.4]

• Check from LP to California Institute of Technology for $10.92. [Filed under LP Biographical: (Business and Financial: Bank Statements and Canceled Checks, December 1948-November 1950; 1960-1962), Box #4.019, Folder #19.2]
• LP Notes to Self: “The Structure of α-manganese” and “The Structure of β-manganese”, June 29, 1950. [Filed under LP Science: (Materials re: Electron Theory and the Structure of Metals and Intermetallic Compounds, 1950-1955), Box #5.003, Folder #3.4]

  June 29, 1950

  Memo to Linus Pauling from Himself,

  The Structure of β -manganese

  While on the plane from Chicago to Pasadena last week - rather two weeks ago - I had an idea about the structure of β -manganese, which has 20 atoms in a cubic unit. The idea is that the 20 atoms might be divided into 4 groups of 5 atoms each, each group consisting of a trigonal bipyramid - that is, a tetrahedron of 4 atoms with a 5th atom out from the center of one of the triangular faces of the tetrahedron; in other words, a double tetrahedron, two tetrahedra with a common face. On checking the structure I have found that this is in fact the case. β-manganese can accordingly be described as a way of packing these pentads, such that each atom has at least 12 nearest neighbors. Each of the smaller atoms, representing the apices of the bipyramids, is surrounded by 12 atoms which are approximately at the corners of an icosahedron. Each of the larger atoms is surrounded by 14 atoms, 2 of which, however, are so far away as hardly to constitute ligates of the central atom.

  If we examine the configuration about a double pyramid, we find that each pentad is surrounded by 6 atoms out from the 6 triangular faces of the bipyramid, then by 6 more introduced in such a way as to sit in pockets formed by 4 atoms, and so on.

• Letter from F. R. Van Abeele, Biochemistry Department, Lilly Research Laboratories, to LP RE: Explains in detail how the samples will be prepared for the ACTH work. States that he would like to visit the chemistry department at Caltech this summer or fall. [Letter from LP to Van Abeele, June 23, 1950] [Filed under LP Correspondence: (Eli Lilly and Company), #111.4]
• Letter from LP to A.O. Morse. RE: Informs him that the Teachers Bulletin for May of 1950 (included) takes a different point of view for the termination of Dr. Lorch. Criticizes Morse for not being truthful. [Reply to Morse June 5, 1950] [Filed under LP Correspondence: (M: Correspondence, 1950) #256.1]
• Letter from LP to Albert Fields, Scientific Chairman, Temple Hospital, RE: Thanks Dr. Fields for sending the interesting articles. States that Field’s experiences as an officer in China seem to be very interesting. [Filed under LP Correspondence: (F: Correspondence, 1950), #128.15]
• Letter from LP to Bank of America, RE: Encloses a check for $2,000.00 to have applied to the loan they have made to him. [Filed under LP Biographical: Business and Financial: (Bank Statements and Canceled Check: Bank of America, June, 1964 - April 1966; Correspondence: Back of America, 1950.), Box #4.020, Folder #20.3]
• Letter from LP to Dr. Glenn T. Seaborg, Radiation Laboratory, University of California, RE: Submits the title of a paper that he would like to present before the Division of Physical and Inorganic Chemistry at the Chicago meeting, “Principles Determining the Structure of Intermetallic Compounds.” States that he thinks 15 minutes will be sufficient for his presentation. Encloses a short abstract and a longer account of the work. Notes that the account is not a paper for publication. [Filed under LP Speeches: 1950s.20]
• Letter from LP to Fred Karush, Neurological Institute, RE: Asks for reprints of his two papers on the binding properties of bovine serum albumin and a reprint of the paper that he wrote with Sonenberg. [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15].
• Letter from LP to W. H. Freeman RE: Inquires whether he has sent a review copy of College Chemistry to Endeavor. Requests that copies of the book also be sent to N. V. Sidgwick and Linus Pauling, Jr. [Filed under LP Books: 1950b.2]
• Letter from LP to W. H. Freeman, W. H. Freeman & Co., RE: [Filed under LP Books: 1947b6.2]

• Bill from Ellis W. Jones, M.D. to AHP for $60.60. Handwritten note indicates that it was paid by AHP on July 20th. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Bill from Jud. R. Scholtz, M.D. and Craig Williamson, M.D. to LP for $3.50. [Filed under LP Biographical: Business and Financial: (Assorted Bills, Receipts and Invoices, 1945-1950.), Box #4.059, Folder #59.3]
• Contract Status Report for N6onr-24423. [Filed under LP Science: (Office of Naval Research: Correspondence, Contract Status Reports and Project Status Reports, 1947-1962), Box #14.031, Folder #31.4]
• Letter from A. M. Zarem, Director of the Los Angeles Division, Stanford Research Institute, to LP RE: Invites LP to attend another meeting of the Institute’s Consulting Board on Air Pollution. Handwritten note: “LP will attend meeting at 4 pm.” [Filed under LP Correspondence: (Stanford Research Institute), #376.7]
• Letter from C. B. Marquand, Secretary, American Chemical Society Committee, Advisory to the Chief, Chemical Corps, Department of the Army, to LP RE: At the suggestion of Dr. Roger Adams, invites LP to participate in a seminar program, at which he could discuss a topic of his choosing. Gives a partial list of speakers & subjects that have been presented at these seminars. Informs him that Dr. Nathan H. Furman and Dr. Ernest Volwiler have agreed to participate in the seminar. [Letter from LP to Marquand, July 18, 1950] [Filed under LP Speeches: 1950s. 23]
• Letter from J. A. A. Ketelaar, Laboratorium voor Algemene en Anorganische Chemie, Universiteit Amsterdam, to LP RE: Tells him that he used LP’s name, without his permission, as one who could provide information about himself, in order to get an invitation to visit the USA under the Fulbright Act. Talks about his recent studies. Inquires if S. Weinbaum’s has been released and asks about LP’s family. [Letter from LP to Ketelaar, July 13, 1950] [Filed under LP Correspondence: (K: Correspondence, 1950), #200.15]
• Letter from LP to Alden H. Emery, American Chemical Society, RE: Writes that he does not know of anyone who will definitely be in Europe at the time of the Congress, but he has looked over the list of Guggenheim Fellows and suggested several people who may be in Europe at the time. Writes that he believes any of them would be a good representative of the Society, except none of them are particularly interested in industrial chemistry. [Letter from Volwiler to Emery, June 26, 1950, Letter from Volwiler to Emery, July 5, 1950]] [Filed under LP Science: (American Chemical Society: Correspondence, 1950-1964), Box #14.006, Folder #6.1]
• Letter from LP to Bishambhar Dayal Saksena, Department of Physics, Pennsylvania State College, RE: Informs him that he will send a reprint as soon as they arrive, and also gives his opinion about the work on the mechanical aspects of quartz. [Letter from LP to Saskena, June 20, 1950] [Filed under LP Correspondence: (S: Correspondence, 1950), #378.4]
• Letter from LP to Dr. J. L. Franklin, Humble Oil & Refining Company, RE: Thanks him for arranging accommodations for AHP’s and his stay in Galveston.. [Letter from Franklin to LP, June 23, 1950] [Filed under LP Speeches: 1950s.19]
• Letter from LP to John M. Lee RE: States that LP’s letter to the Speakers Division of the Art, Sciences, and Professions Council has been turned over to him for answer. States that it will not be possible for him to speak at the peace meeting because he is experiencing medical problems that make it is necessary for him to abstain from all activities for six weeks. [Letter from Lee to Art, Sciences, and Professions Council, June 20, 1950] [Filed under LP Correspondence: (L: Correspondence, 1950), #230.16]
• Letter from LP to Professor Chesney R. Moe, San Diego State College, RE: Thanks him for his letter. States that he will need a lantern for his lecture. [Letter from Moe to LP, April 12, 1950] [Filed under LP Speeches: 1950s.17]
• Letter from W. F. Libby, Institute for Nuclear Studies, University of Chicago, to Hjalmar Rued Holand, cc. LP RE: Talks about his idea, as discussed with LP, that the Scandinavians may have discovered America before Columbus and that natural radiocarbon dating could be used to make this connection. Inquires about artifacts that contain enough carbon to do such testing. [Letter from LP to Libby, June 30, 1950] [Filed under LP Correspondence: (Libby, W. F.), #217.2]
• Postcard from the Post Office Department to LP RE: Return receipt for a registered or insured article. [Letter from LP to Okrand, June 28, 1950] [Filed under LP Correspondence: (O: Correspondence, 1950), #300.12]
• Royalty Statement for LP for July 1, 1949 - June 30, 1950. W. H. Freeman and Company, Publishers. [Filed under LP Biographical: (Business and Financial: Royalty Statements, 1938-1995), Box #4.045, Folder #45.1 and LP Books: 1947b6.2]