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April
  • The adsorption of water by proteins. J. Am. Chem. Soc. 67 (April 1945): 555-557. Written by: LP. [Filed under: LP Publications, 1945p.1]

April 2

April 3

April 4

April 5
  • Letter from Charles Briggs to LP RE: Asks him to consider writing a letter to the editor of Science concerning the matter of Esperanto and recommending its usage as a common language for scientists. [Letter from LP to Briggs April 27, 1945] [Filed under LP Correspondence: Box #37.12, file:(B: Correspondence 1945)]
  • Letter from LP to Dr. Chester S. Keefer, Committee on Medical Research. RE: Explains misunderstandings that have arose. Two copies. [Filed under LP Science: Scientific War Work Materials re: Oxypolygelatin, 1941-1945, 1951-1952, 1972-1974: Box #13.004 Folder #4.2]
  • Letter from LP to Lt. J. H. Stannard, Bureau of Medicine and Surgery, Navy Department. RE: Disagrees with his opinion and gives facts to back it up. [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1942-1950: Box #13.002 Folder #2.3]
  • Letter from LP to Mr. I. H. Chayen, British Glues and Chemicals Ltd.. RE: Informs him that there isn't any published reports on oxypolygelatin. Encloses a summary of the manufacture of oxypolygelatin. [Filed under LP Science: Scientific War Work Materials re: Oxypolygelatin, 1941-1945, 1951-1952, 1972-1974: Box #13.004 Folder #4.2]
  • Letter from Louis Jordan, Executive Officer of the RBNS, to the members of the Research Board for National Security. Informs them that the second meeting of the Research Board will be on April 18th at 9:30 a.m. in Washington, D.C. LP Safe: Drawer 3, Folder 3.022

April 6
  • Letter from LP to Mrs. W. Burton Lewis, Technological Institute RE: Writes to offer employment on the NDRC project effective as soon as transfer to Pasadena is possible. [Letter from Mrs. W. Burton Lewis to LP April 11, 1945] [Filed under LP Biographical, CIT: Materials re: Teaching and Advising of Graduate Students by Linus Pauling, 1936-1963: Box #1.018, Folder 18.7]
  • Letter from LP to Victor Reynolds, Cornell University Press, RE: Asking Reynolds if the royalties of books sold in Germany would be sent to him. And continuing to tell him that there are few revisions to make in the current book, except for a few misprints. [Filed under: LP Manuscripts of Books, 1939b.2]
  • Letter from LP to W. R. Stott RE: Requests that the Chemistry Apparatus and Supplies 1944-45 account for the Division of Chemistry and Chemical Engineering be increased by $2500. [Filed under LP Biographical: Academia, California Institute of Technology: Assorted Financial Materials: 1930-1950: Box #1.031, Folder 31.1]
  • Letter from Ralph Spitzer to LP RE: Says he was notified of his award of a National Research Fellowship and wants to thank him for the sponsorship. Talks about the extended trip he will be making but can't discuss the details. Hopes to visit LP soon. [Letter from LP to Ralph Spitzer April 27, 1945] [Filed under LP Biographical: Political Issues: Ralph Spitzer: Academic Freedom and Passport Difficulties, 1942-1994: Box #2.034, Folder 34.1]
  • Postcard from E. L. Nelson, A.P.S. to LP RE: Thanks him for notifying them of the error, and asks that he please return the copies of The Physical Review. [Letter from LP to Pegram March 31, 1945] [Filed under LP Correspondence: Box #11.10, file:(American Physical Society, 1935, 1943-1945, 1959-1968)]
  • Receipt for classified material from George G. Wright, Crellin Lab., Calif. Inst. Tech., to Dr. Warren C. Lothrop. LP Safe: Drawer 3, Folder 3.022
  • Writes cheque to “Argosy Hogarth” $15.00 [LP Biographical: Business and Financial 4.073, folder 73.3]
  • Writes cheque to “First Fed. Ap 1 payment” $210.24 [LP Biographical: Business and Financial 4.073, folder 73.3]
  • Writes cheque to “Mr. Crellin. Jan 1 payment” $80.00 [LP Biographical: Business and Financial 4.073, folder 73.3]
  • Writes cheque to “State Treasurer. State inc take. First 1/3 for LP & AHP” $28.98 [LP Biographical: Business and Financial 4.073, folder 73.2]

April 7
  • Letter from Dr. E. Brand to LP RE: Requests clarification of figures in Table 1 of LP's paper on Absorption of Water by Protein in the April JACS. Adds that he would like to mention LP's figures in his forthcoming paper. [Letter from LP to Brand April 23, 1945] [Filed under LP Correspondence: Box #37.12, file:(B: Correspondence 1945)]
  • Letter from M. P. Lewis, Property Accountant, to R. C. Bowker, Acting Contracting Officer, Office of Scientific Research and Development. RE: Closes the records on Contract OEMsr-584 by paying $3.00 for three oxygen meters. [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.1]

April 9  (New York)
  • Letter from Denis Fox, University of California, to LP. RE: Has just gotten word of his appointment as a Fellow of the Guggenheim Foundation. Expresses a sense of appreciation at this honor. [Filed under LP Science: John Simon Guggenheim Memorial Foundation, 1925-1945: Box #14.013 Folder #13.19]
  • Letter from Frank Blair Hanson, The Rockefeller Foundation to R. A. Millikan, C. I. T., cc: LP RE: Acknowledging LP's grant request, which will be reviewed during the May 18, 1945 meeting of the Board of Trustees. [Millikan's letter March 6, 1945; next letter May 18, 1945] [Filed under LP Science: Rockefeller Foundation, 1943-1983: Box #14.039 Folder #39.2]
  • Letter from LP to Prof. T. von Karman, Pentagon Building, RE: Encloses a letter from Prof. Lars Onsager and requests this letter be returned. Gives the dates he'll be in Washington. [Letter from Theodore von Karman to LP April 18, 1945] [Filed under LP Correspondence: 427.5]
  • Letter from Warren C. Lothrop, Technical Aide to Division 19 of the National Defense Research Committee, to Dr. George G. Wright, Department of Chemistry & Chemical Engineering at CIT, cc: Mr. G.A. Richter. Encloses the battered screeds from Dr. Pierce's laboratory and a report on the test results. Mentions that the copper physical and methylene blue reagents gave the best detection. Suggests that they try to develop the enclosed papers. LP Safe: Drawer 3, Folder 3.016

April 10  (New York)
  • Letter from LP to Carey Croneis, President, Beloit College RE: Congratulates Croneis on his new position and thanks him for the Bulletin he sent. [Letter from Croneis to LP March 9, 1945] [Filed under LP Correspondence Box: #74.13, file:(C: Correspondence, 1945)]
  • Letter from Prof. Joel H. Hildebrand, Department of Chemistry, U.C. Berkeley, to LP RE: Congratulates him on being appointed to the Research Board of National Security. Encloses a copy of a letter he sent to Dr. Jewett on November 30, 1944 which contains information which may be of interest to LP. Notes he will be at the Academy meeting in Washington, where he may see LP. [Filed under LP Correspondence: Box #159.3, file:(Hildebrand, Joel)]
  • Memorandum from M.R. Deutsch, Fiscal Accountant of the Office of Scientific Research and Development, to LP. Voucher for per diem and/or reimbursement of $360.86 for expenses incident to official travel. LP Safe: Drawer 3, Folder 3.012

April 11  (Washington, D.C.)
  • Letter from H.B. Sweatt, Director, Animal Glue Information Service to LP RE: Thanks him for his letter and continuing research in the field. [Letter from LP to Sweatt April 4, 1945] [Filed under LP Correspondence: Box #12.11, file:(A: Correspondence, 1944)]
  • Letter from LP to E. L. Nelson of the A.P.S., cc: George Pegram, Treasurer, RE: Returns the issues of The Physical Review and thanks them for sending the Journal of Chemical Physics. [Postcard from Nelson to LP April 6, 1945] [Filed under LP Correspondence: Box #11.10, file:(American Physical Society, 1935, 1943-1945, 1959-1968)]
  • Letter from Mae R. Magee, Special Assistant to the Director of the Office of Scientific Research and Development, to LP. Encloses Transportation Request Book No. B-148. Reminds him that an original and 4 copies of reimbursement vouchers should be submitted to this office when claiming travel expenses and to attach white copies of transportation requests to vouchers. Asks him to return all transportation request book jackets when the requests are used or upon termination of his travel authorization. [Filed under LP Safe: Drawer #3, Folder #3.012]
  • Letter from Mrs. W. Burton Lewis to LP RE: States that she would be very happy to accept his offer of employment at CIT and states she will be released to report n Pasadena on June 15. [Letter from LP to Mrs. W. Burton Lewis April 6, 1945] [Letter from LP to Mrs. Burton Lewis April 25, 1945] [Filed under LP Biographical, CIT: Materials re: Teaching and Advising of Graduate Students by Linus Pauling, 1936-1963: Box #1.018, Folder 18.7]
  • Writes cheque to “Poly Full Tuition for Linda” $168.18 [LP Biographical: Business and Financial 4.073, folder 73.2]

April 12  (Cumberland, MD)

April 13  (Cumberland, MD)

April 14  (Washington, D.C.)

April 15  (Washington, D.C.)

April 16  (Washington, D.C.)

April 17  (Washington, D.C.)
  • Memo from A. H. Walter, to LP. RE: Requests a memorandum informing him of their intention to work beyond the present termination date of June 30, 1945. [Filed under LP Science: Scientific War Work Materials re: Oxypolygelatin, 1941-1945, 1951-1952, 1972-1974: Box #13.004 Folder #4.2]
  • Writes cheque to “Adohr Milk. Milk, butter, etc” $27.34 [LP Biographical: Business and Financial 4.073, folder 73.2]
  • Writes cheque to “C. A. Morse. S. News 3-1 to 5-1 LA Times” $3.50 [LP Biographical: Business and Financial 4.073, folder 73.2]
  • Writes cheque to “Roy Edwards. Troy” $5.19 [LP Biographical: Business and Financial 4.073, folder 73.2]

April 18  (Washington, D.C.)
  • Agenda for the meeting of the Research Board for National Security on April 18, 1945. Handwritten notes by LP. LP Safe: Drawer 3, Folder 3.020
  • LP Received the Report and Recommendations of the Special Faculty Committee on Patents. [Enclosed is the Proposed patent Agreement.] [Filed under LP Biographical: Academia: Box #1.029 file 29.2]
  • Letter from Theodore von Karman, Headquarters, Army Air Forces, to LP RE: Thanks LP for the forwarded letter from Prof. Onsager and states he is taking copies of it abroad with him so he will have time to thoroughly think them through. [Letters from LP to T. von Karman April 9, 1945, from Fey L. Martin, Secretary to Dr. von Karman, April 21, 1945] [Filed under LP Correspondence: 427.5]

April 19
  • Letter from Bradley Dewey, President-Elect, to LP. RE: Informs him that Wall as the recipient of the ACS Award. [Filed under LP Science: American Chemical Society: Materials re: Committees and Awards, 1944-1949: Box #14.009 Folder #9.5]
  • Letter from Dr. George O. Doak to LP RE: Discusses the work his lab has been carrying out on the synthesis and chemotherapeutic activity of organic arsenic compounds, particularly phenyl arsenoxides. Requests LP's comments on questions relating to hydrogen bonding involved when these chemicals react with organic material, particularly the strength of the bonds. (Notes in Left margin: “Dave - What to you think?” and “? Too strong and acid? change effect”) [Filed under LP Correspondence Box: #98.10, file:(D: Correspondence, 1944)]
  • Letter from Frederick B. Johnston, 1st Lt. AUS, Special Assistants Division of the Research and Development Branch of the Office of Strategic Services. Acknowledges the receipt of the materials that Johnston sent him. Notes that they have gotten satisfactory results with the preliminary development tests on the screeds he sent. Says that they are awaiting his instructions before making samples to send to him. LP Safe: Drawer 3, Folder 3.016
  • Memo from A. H. Walter, to LP. RE: Shows the status for his government contracts on attached tapes. [Filed under LP Science: Scientific War Work Materials re: Oxypolygelatin, 1941-1945, 1951-1952, 1972-1974: Box #13.004 Folder #4.2]
  • Memorandum from Henry Allen Moe, Secretary, Guggenheim Foundation, to Committee of Selection. RE: Mails a copy of the news release concerning appointments to the Fellowship. Informs him of three necessary changes. [Filed under LP Science: John Simon Guggenheim Memorial Foundation, 1925-1945: Box #14.013 Folder #13.19]

April 20
  • Annual Secrecy Agreement from the Army Air Forces. Signed by Gladys E. Wilson and LP. [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.2]
  • Copy of a letter from Dr. Fang-Hsuin Lee, Department of Chemistry, University of Nanking, China, to LP RE: Sends him a reprint of “Polarization and Radius of Ions” for comment. Requests similar reprints. [Filed under LP Correspondence: Box #230.11, file:(L: Correspondence, 1945)]
  • Letter from Warren C. Lothrop, Technical Aide to Division 19 of the National Defense Research Committee, to Dr. George G. Wright, Department of Chemistry & Chemical Engineering at CIT, cc: Mr. G.A. Richter. Informs Wright that he is sending the full LC-1 report to OSS. Notes that he is not happy with Wright's discoveries with the different papers. Suggests that Wright send copies of all his correspondence and reports to Wright. Tells him that Dr. Pierce's results showed that the iodine fuming, methylene blue, and copper physical tests were dangerous. Asks him to determine whether Pierce's results were due to incomplete restoration. Answers that Wright should concentrate on studying the best of the papers and try to get them to pass the three reagents. Asks when it will be convenient for him to visit. LP Safe: Drawer 3, Folder 3.016
  • Memorandum from Gladys Wilson to Mr. Youtz. RE: Asks if LP's signature is required on the attached form. [Form April 20, 1945] [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.2]
  • Memorandum from Thurston Greene, Office of the Security Officer, to LP. RE: Execution of Annual Secrecy Agreement Renewal. [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.2]
  • Writes cheque to “Sophie Wipplehauser. Two weeks -500" $29.50 [LP Biographical: Business and Financial 4.073, folder 73.2]

April 21
  • Diary 3.75x6" labeled "Paragon S-7845", spiral bound containing LP war work notes on Powder, March 23, 1945 - April 21, 1945. There is a Safe 4.017 Addendum: Two sheets of LP handwritten notes both dated April 18, 1945 by LP, relates to the RBNS meeting. LP Personal Safe: Drawer 4, Folder 4.017
  • Letter from F.E. Blacet, Director, Dvn. 10, NDRC, Central Laboratory, Northwestern University to US Employment Service RE: Certifies that Mr. Louis C. Weiss was released from his duties at Central Laboratory, Northwestern University on April 16, 1945 made at the request of Mr. Weiss so he be made available to work with Division 8 of NDRC at CIT. [Filed under LP Biographical, CIT: Materials re: Teaching and Advising of Graduate Students by Linus Pauling, 1936-1963: Box #1.018, Folder 18.7]
  • Letter from Miss Fey L. Martin, Secretary to Dr. von Karman, Headquarters, Army Air Forces, to LP RE: States they found the letter which was meant to be returned to LP with the letter from April 18, 1945 and apologizes. [Letter from Theodore von Karman to LP April 18, 1945] [Filed under LP Correspondence: 427.5]
  • Letter from Reuben E. Wood to Mr. Clarence Kiech. RE: Is confronted with a problem in connection with the invention of the Pauling Oxygen Meter. Is writing to request Kiech's services. Explains the problem. Asks Kiech's advice. [Receipt April 28, 1945] [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.1]

April 22
  • Program: Eighth Annual Seminar of the Alumni Association, California Institute of Technology, April 22, 1945. [Filed under LP Scrapbooks, 1941-1945: Box #6.004, Folder 4.11]

April 23

April 24
  • Letter from Dr. Henry Bull to LP RE: Apologizes for mentioning LP's letter in the paper that the JACS turned down, and for any embarrassment caused. [Letter from LP to Bull April 30, 1945] [Filed under LP Correspondence: Box #37.12, file:(B: Correspondence 1945)]
  • Report #7: "Further Observations on the Use of Acid Dyes for Development of Protein SW," by George G. Wright, Frank Lanni, and William Eberhardt. Handwritten note: "Copy #1 Dr. Lothrop, #2 Mr. Richter, #3 C.I.T. Files, #4 Dr. Lothrop (when ready)." LP Safe: Drawer 3, Folder 3.013

April 25

April 26
  • Letter from Walter A. Bara to LP RE: Encloses a copy of a review of “Quantum Mechanics” which the American Embassy at Madrid had sent to the State Department. [Filed under: LP Books 1935b.1]
  • Note from Dr. Chi-Si Lu, Department of Chemistry, U.C. Berkeley, RE: Writes that he has decided to take the position with Pitzer at Berkeley rather than his preferred choice of Cal Tech due to the draft situation. Adds that it will be a short-term project and that he hopes to visit Pasadena this summer, as he considers it his “second home town.” [Note from Lu to Lp March 14, 1945, letter from LP to Lu May 1, 1945] [Filed under LP Correspondence: Box #218.7, file:(Lu, Chia-Si)]
  • Receipt for classified material from G.G. Wright, Calif. Institute of Technology, to Dr. Warren C. Lothrop. LP Safe: Drawer 3, Folder 3.022

April 27
  • Letter from LP to Arthur B. Lamb, Journal of the American Chemical Society. RE: Submits for consideration for publication in the Journal a manuscript. [Filed under LP Science: American Chemical Society: Correspondence, 1943-1948: Box #14.003 Folder #3.3]
  • Letter from LP to Charles Briggs RE: Replies that while he has had an interest in Esperanto for some years, he is currently unable to divert any time from his war research to prepare the requested letter. [Letter from Briggs to LP April 5, 1945] [Filed under LP Correspondence: Box #37.12, file:(B: Correspondence 1945)]
  • Letter from LP to Dr. H. S. Reed, Div. of Plant Nutrition, University of California, RE: States that he has just returned from an Eastern trip and that he is sorry he missed Reed's visit to Pasadena. [Letters from H. S. Reed to LP April 3, 1945, May 2, 1945] [Filed under LP Correspondence: #340.10]
  • Letter from LP to Homer W. Smith, New York University School of Medicine. RE: Informs him of the method for determining gelatine in plasma. [Filed under LP Science: Scientific War Work Materials re: Oxypolygelatin, 1941-1945, 1951-1952, 1972-1974: Box #13.004 Folder #4.2]
  • Letter from LP to Ralph Spitzer RE: Glad to learn that he has been appointed to a National Research Fellowship. Looking forward to seeing him. [Letter from Ralph Spitzer to LP April 6, 1945] [Filed under LP Biographical: Political Issues: Ralph Spitzer: Academic Freedom and Passport Difficulties, 1942-1994: Box #2.034, Folder 34.1]
  • Letter from Reuben E. Wood, to LP and Dr. J. H. Sturdivant. RE: Enclosed a copy of a letter to Mr. Kiech. Is having problems regarding signing the oath for a patent. Passed his pre-induction physical examination. Discusses recent work. [Receipt April 28, 1945] [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.1]
  • Letter from William C. Sankey, Capt., QMC, Supply Officer, Field Experimental Unit, Office of Strategic Services, to LP RE: Requests that Alice Flak be delivered 10 pounds of potassium chloride, sodium chloride, and ammonia nitrate. Handwritten at the bottom: “April 28, 1945; Received, from Linus Pauling, the above. Alice Flack.” [Filed under LP Correspondence: #421.6]

April 28
  • Letter from Victor Reynolds, Cornell University Press, to LP. RE: Telling LP that the terms of the royalties are the same in Germany as they are here, with a few minor changes. And then tells of the reprint, and that the order fro 2,000 copies has been placed. [Filed under: LP Manuscripts of Books, 1939b.2]
  • Letter from Warren C. Lothrop, Technical Aide to Division 19 of the National Defense Research Committee, to Dr George G. Wright, Department of Chemistry and Chemical Engineering at CIT, cc: Mr. G.A. Richter. Explains the preliminary test of the LC-2 screeds which he saw the day before, specifically using liquid iodine. Asks Wright if he thinks it would be worthwhile to do more experiments until he is satisfied that he can pass the methylene blue and copper physical. Corrects the confusion regarding the number of copies of offense and defense reports that should be sent to him. Clarifies what he meant when cautioning against loading down Dr. Pierce with screeds. [Letter from Wright to Lothrop, April 25, 1945] LP Safe: Drawer 3, Folder 3.016
  • Receipt of copy of letter to Mr. Clarence Kiech sent from Dr. R. E. Wood to LP. [Letter from Wood to LP April 28, 1945, Letter from Wood to Kiech April 21, 1945] [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.1]

April 29
  • Writes cheque to "Anne Churchill Shop," $9.17. [Filed under LP Biographical: Business and Financial, Box 4.017, Folder 17.3]

April 30