- Letter from Dennis Flanagan, Managing Editor, Scientific American, to LP RE: Requests permission to use drawings by Roger Hayward that were published in a recent article of LP's and also requests 2 or 3 photographs so that a small drawing of LP and Dr. Beadle can appear in an article to be published in the May issue. [Letter from Dennis Flanagan to LP April 14, 1949] [Filed under LP Correspondence: #374.6]
- Letter from Executive Secretary, to Dr. John C. Bailar, Jr., University of Illinois. RE: Asks what equipment will be available for LP's talk on June 20th. [Filed under LP Science: American Chemical Society: Correspondence, 1948-1949: Box #14.004 Folder #4.2]
- Letter from LP (Dictated and signed in his absence, W) to Dr. S. W. Barber, General Research and New Development Division, Owens-Illinois Glass Company RE: Apologizes that he cannot answer the question of the changes in the nature of the bonds in glass with change in temperature and advises that it will be necessary to examine separate phases before making any generalizations. [Letter from Barber to LP March 21, 1949] [Filed under LP Correspondence: Box #299.7, File: (Owens-Illinois Glass Company, 1936, 1949, 1951-1952.)]
- Letter from LP (signed in his absence) to George Pepper enclosing a copy of a letter from Dr. Shapley.
- Letter from LP (signed in his absence) to George Pepper returning Jack J. O'Brien's letter and suggesting the Mr. O'Brien write to the Scientist's Committee on Loyalty Problems.
- Letter from LP (signed in his absence) to Warwick M. Tompkins thanking him for his offer to entertain guests of a conference on world peace.
- Letter from LP to Dr. A. N. Richards, President. RE: Thanks him for his letter. Shall have the biography and bibliography of Noyes ready for publication before long. [Filed under LP Science: National Academy of Sciences, 1945-1951: Box #14.020 Folder #20.3]
- Letter from LP to Dr. Miller W. Swaney, Esso Laboratories. RE: Thanks him for his letter. Submits a statement in connection with expenses of the trip. [Filed under LP Science: American Chemical Society: Correspondence, 1948-1949: Box #14.004 Folder #4.2]
- Letter from LP to Frank Aydelotte. LP states that he and AHP enjoyed seeing he and his wife and that he is making plans for his next eastern trip. LP asks if it is likely that the Guggenheim Advisory Board will be held on April 20 and if it will be in the afternoon or morning. LP will be in Chicago on Tuesday and wouldn't be able to reach New York until the afternoon. [Reply to LP April 1, 1949]
- Letter from LP to Henry Allen Moe, Guggenheim Foundation. RE: Informs him of his traveling expenses from the last meeting. [Filed under LP Science: John Simon Guggenheim Memorial Foundation, 1946-1952: Box #14.014 Folder #14.4]
- Letter from LP to W. H. Freeman, W. H. Freeman and Company RE: Encloses a letter from Dr. Ketelaar in Amsterdam and suggests he send him a copy of their lab manual. [Filed under LP Correspondence: 439.7]
- Letter from Lester Berkowitz, Secretary, Phi Lambda Upsilon, to LP. RE: Thanks him for presenting a lecture at Columbia. [Filed under LP Science: American Chemical Society: Correspondence, 1948-1949: Box #14.004 Folder #4.2]
- Letter from Unknown to Frank. RE: Asks him if the next Committee of Selection meeting will be held on April 20th. Makes requests about when it is held. [Filed under LP Science: John Simon Guggenheim Memorial Foundation, 1946-1952: Box #14.014 Folder #14.4]
- Memo from LP to Carl Niemann RE: states that he has been assured by Climax Molybdenum that they will provide a grant for next year that will cover Dr. Waugh's salary, states it might be worthwhile to replace Waugh by Pasternak. [Filed under LP Biographical: Academia: Box 1.018, Folder 18.2]
- Newspaper Clipping: “Dr. Pauling Defends World Peace Parley”, Pasadena (California) Star-News, March 29, 1949. [Filed under LP Scrapbooks, 1946-1950: Box #6.005, Folder 5.33]
- Notarized affidavit signed by J. J. Kendall, M. W. Johnson. RE: Swear that they took portions of the same sample as Greusel and Smith-Emery. [Filed under LP Science: American Chemical Society: Materials re: Committees and Awards, 1938-1950: Box #14.008 Folder #8.12]
- Telegram to LP from Hannah Dorner stating that Secretary Acheson has ordered that foreign guests can't attend the upcoming meeting on peace. She asks LP to wire Secretary Acheson to ask him to reverse his decision so they can exchange peace ideas with other countries.
- Vita of Edgar Clay Britton. [Filed under LP Science: American Chemical Society: Materials re: Committees and Awards, 1944-1949: Box #14.010 Folder #10.5]