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• AHP writes cheque to: Lola Cook amount $38.70 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: R.E. Croonquist amount $3.50 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from LP to Arthur B. Lamb, Editor, Journal of the American Chemical Society RE: LP recommends that the manuscript by Pearce and Eckstrom not be published. [Lamb's letter to LP December 16, 1936] [LP Science Box 14.002, Folder 3]

• Letter from J. H. Van Vleck to LP RE: Vleck looks forward to King coming the Harvard and looks forward to meeting with Beach. [Filed under: Van Vleck, J. H. Correspondence, Box #424.5]
• Letter from LP to Arthur B. Lamb, Editor, Journal of the American Chemical Society RE: LP submits for publication in the Journal the manuscript by Coryell, Stitt and himself on the magnetic properties and structure of ferrihemoglobin and some of its derivatives. [LP Science Box 14.002, Folder 3]
• Letter from Victor K. LaMer to LP RE: Thanks LP for his kind letter offering him laboratory space next year school year. Informs LP that his sabbatical leave has just been granted from February 1 through the summer. [Filed under: L Individual Correspondence, Box #212.4]

• Letter from LP to Chairman of the Fellowship Committee RE: LP writes to recommend Mr. R. C. Jones for a fellowship or assistantship in the Chemistry Department of Harvard University. [Filed under: H: Correspondence, Box #165.2]
• Letter from LP to Dean of the Graduate School, University of Illinois RE: LP writes a letter of recommendation in support of Mr. R. C. Jones application for a fellowship or assistantship in the Chemistry Department. LP goes on to describe Jones' personality and work habits. [Filed under: I: Correspondence, Box #185.2]
• Letter from LP to Dr. Oliver Wulf RE: LP recommends Dr. Simon Bauer for the job opening in Wulf's laboratory. [LP's previous letter: January 26, 1937, Wulf's reply: February 7, 1937] [Filed under: W: Correspondence, Box #443.5]
• Letter from LP to Mr. Wickman RE: Is pleased to hear that Hamson and Springhall will spend the first semester of the coming year at Cornell also. [Filed under C: Correspondence, 1921-1957, Box #74.5]
• Letter from LP to Professor W. A. Noyes RE: Informs Noyes that Dr. E. B. Wilson Jr's book on the theory of infrared and Raman spectra looks good to him. For successor to Professor Stieglitz, LP suggests Professor Roger Adams and Professor Henry Gilman. [Noyes' letter: January 30, 1937] [Filed under: N: Individual Correspondence, Box #279.3]
• Letter from LP to Registrar, University of California at Los Angeles RE: In regards to Mr. David Pressmans' application for a University fellowship or assistantship, LP recommends him and believes he will be an excellent graduate student. [Filed under: P: Individual Correspondence, Box #309.7]
• Letter from Professor W. A. Noyes to LP RE: LP is glad to hear that Noyes is interested in his work with Bauer on B6H9. LP goes on to describe in detail this work. [Filed under: N: Individual Correspondence, Box #279.3]
• Letter from Wendell M. Latimer to LP RE: Thanks LP for his recommendations for De Vault and Jones but thinks at this time they will only accept De Vault. [Filed under: L: Individual Correspondence, Box #212.15]
• Manuscript, Typescript, Notes: The Structure of Molecules, radio talk, No Location [LP Speeches 1937s.1]

• AHP writes cheque to: Lola Cook amount $10 [Filed under LP Biographical: Box #4.014, Folder #1]

• Letter from LP to David Harker RE: Is glad to hear that the teaching of freshman chemistry is going well and reports that he has not heard anymore from Eskigian since last fall. [Filed under: H: Individual Correspondence, Box #151.10]
• Letter from LP to Dr. L. T. Brownmiller RE: Thanks Brownmiller for sending the many samples. LP plans on sending him the photograph of 3CaO Al2O3. [Filed under LP Correspondence: Box #37.4]
• Letter from LP to Professor J. W. McBain RE: LP reports that he has very few finishing in either graduate or undergraduate work and knows no one at the present time interested in Fellowships for Stanford. [Filed under: M: Correspondence, Box #255.4]
• Letter from LP to Professor K. Lark-Horowitz RE: LP explains that he thinks it will be highly beneficial for Yearian to stay at CIT for another year. [Filed under: H: Correspondence, Box #165.2]
• Letter from LP to Professor Wendell M. Latimer RE: Explains that he thinks Latimer made a wonderful decision appointing De Vault for next year. LP looks forward to seeing him on the 16th. [Filed under: L: Individual Correspondence, Box #212.15]

• Notes on the status of Te(OH)6 [LP Science Box 3.003, Folder 23]

• LP Research Notebooks, RNB 09 RE: Electron diffraction data - Furan. [Filed under LP Research Notebooks: Research Notebook 9: 146-147]
• Letter from Oliver Wulf to LP RE: Thanking LP for the letter in which he mentions Dr. Bonner but informs LP that the position has already been filled. [LP's previous letter: February 3, 1937] [Filed under: W: Correspondence, Box #443.5]

• AHP writes cheque to: Community Chest of Pasadena amount $5 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from E. K. Wickman to LP RE: Is glad to hear that LP has invited Springhall and Hamson to come to Cornell with him. Informs LP that Mr. Littell plans to come out to California within a few weeks and will talk over any necessary arrangements. [Filed under C: Correspondence, 1921-1957, Box #74.5]
• Letter from J. C. Warner to LP RE: Warner was pleased to learn that Dr. Stitt has been recommended for the Society of Fellows at Harvard and has written to Professor Henderson about him. Informs LP that his work on infrared absorption has been accepted for publication in the Journal and should appear in April [LP's letter: January 29, 1937, LP's reply: February 13, 1937] [Filed under: W: Correspondence, Box #443.5]

• AHP writes cheque to: Katharine Putnam Crane amount $85 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: Pitzer and Warwick amount $3.19 [Filed under LP Biographical: Box #4.014, Folder #1]
• LP writes cheque to: Edwin J. Porter amount $5.60 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from D. M. Wrinch to LP RE: Regrets that they were unable to meet during her time in the States this Spring but after discussing it with Dr. Weaver, Wrinch suggests she spend some time at CIT during next winter. [Filed under: W: Individual Correspondence, Box #438.12]
• Letter from Dr. Maurice L. Huggins to LP RE: Informs LP that he has just written a paper on "The Polarity of Chemical Bonds" and that because he disagrees with some of the theoretical interpretations is sending a copy to LP before submitting it for publication. [Filed under: H: Individual Correspondence, Box #162.13]
• Letter from Dr. R. C. Evans to LP RE: Asks LP for many reprints of articles to help in his preparations of his book on Crystal Chemistry. [Filed under: E: Correspondence. 1930, 1936-1959, Box #112.4]
• Letter from LP to Arthur B. Lamb, Editor, Journal of the American Chemical Society RE: LP wishes to submit for publication the enclosed manuscript on "The Interpretation of Freezing Point Data in Terms of Polymerization" by Edwin N. Lassettre. [LP Science Box 14.002, Folder 3]
• Letter from LP to Dr. Alfred Marshak RE: Although very interested in his work, LP regrets to say that it is not possible to make room for his investigations in the lab during the coming year. [Marshak's letter: January 29, 1937] [Filed under: M: Correspondence, Box #255.4]
• Letter from LP to Dr. E. R. Buchman, Johns Hopkins University, RE: LP is pleased to hear that Buchman is interested in moving his laboratory work to California Tech. However, asks Buchman when he may be coming because certainly arrangements can be made if enough time is given to make them. [Buchman's letter: January 27, 1937] [Buchman's reply: February 26, 1937] [Filed under LP Correspondence: Box #33.2, file: (Buchman, Edwin R. 1936-1960)]
• Letter from LP to Roger Adams RE: writes of their communication about a year ago, of the possibility of hiring Dr. Lindsay Helmholz. LP is currently deciding whether or not to reappoint Helmholz for another year or if Adams is still thinking of appointing Helmholz to his department. [Last letter from LP to Adams May 25, 1936] [Filed under A: Individual Correspondence, Box #1.3]
• Letter from Professor Dr. J. M. Burgers to LP RE: Asks LP to support his undertaking of a proposal being brought before the International Council of Scientific Unions concerning the social responsibilities of science and of scientific workers in various publications and discussions of the last years. [LP's reply: February 24, 1937] [Filed under LP Correspondence: Box #37.4]
• Newspaper Clipping: "Campus Ready for Parade of World-Famous Educators," Los Angeles Times RE: Announces Pomona College's plans to have lecturers speak on various fields and topics including chemistry, writing, art, education, radio engineering and politics. [Newspaper Clippings: 1937n.1]

• Letter from LP to Professor Duwalda RE: Recommending that Dr. G. C. Hampson and Dr. H. D. Springall, both Commonwealth Fellows, be elected to full membership in Sigma Xi. [Filed under: S: Organizational Correspondence, Box #375.2]
• Letter from W. A. Noyes to LP RE: Noyes encloses Dr. Bailor's tentative outline for his Monograph on "The Chemistry of Coordinate Compounds" for LP to look over. [Filed under: N: Individual Correspondence, Box #279.3]

• Letter from LP to Professor A. C. Menzies RE: LP describes Hunter's and Samuel's work on the valence theory as superficial, unorganized and having poor quality. LP does recommend that Hunter be offered the job and that several men with whom he has worked would be much better suited for such a position. [Menzies letter: January 26, 1937] [Filed under: M: Correspondence, Box #255.4]
• Letter from Warren Weaver, Director, The Natural Sciences, Rockefeller Foundation to LP RE: Acknowledging receipt of LP's letter of 1-29 and the accompanying report he received while in Pasadena. He would like to know LP's opinion on Dorothy Wrinch's latest work. [LP's reply to Weaver March 6, 1937] [LP Science Box 14.038, Folder 5]

• AHP writes cheque to: O.C. Cooper amount $6.69 [Filed under LP Biographical: Box #4.014, Folder #1]
• LP writes cheque to: American Chemical Society amount $17.50 [Filed under LP Biographical: Box #4.014, Folder #1]
• LP writes cheque to: American Institute of Physics amount $12 [Filed under LP Biographical: Box #4.014, Folder #1]
• LP writes cheque to: American Physical Society amount $14 [Filed under LP Biographical: Box #4.014, Folder #1]
• LP writes cheque to: Williams and Wilkins Co., amount $7 [Filed under LP Biographical: Box #4.014, Folder #1]

• AHP writes cheque to: Adohr Milk Farms amount $22.10 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from LP to Professor J. C. Warner RE: LP thanks Warner for sending the letter regarding Mr. Burcik. Asks for a copy of his paper on the infrared absorption spectrum of dioxane. [Warner's previous letter: February 8, 1937, Warner's next letter: April 28, 1937] [Filed under: W: Correspondence, Box #443.5]

• Letter from Edwin N. Lassettre to Dr. Gerald Wendt RE: Encloses the manuscript of the "Relation of the Hydrogen Bond to Abnormalities in the Molecular Weights of Substances in Solution" for publication in the April issue. [Filed under C: Organizational Correspondence: Box #70.5]
• Note from George Cady to LP RE: Is glad to hear that Mr. Brockway and LP were able to draw conclusions regarding the structure of the compound NO3F. [Filed under C: Correspondence, 1921-1957, Box #74.5]

• Letter from T.H. Morgan to A.J. Haagen-Smit, RE: Morgan invites Haagen-Smit to join the faculty of the Institute as an Associate Professor. [Filed under LP Safe Contents, Drawer 2, Folder 2.005.60a]
• Letter from T.H. Morgan to LP, RE: Encloses a letter which explains the situation regarding persuading Dr. Haagen-Smit to join them in connection with the hormone work. Discusses the development of a bio-organic or organic chemistry program. Handwritten note by LP: "Haagen- Smit." [Filed under LP Personal Safe: Drawer 2, Folder 2.005.60]

• Letter from H. I. Schlesinger to LP (copy to W. A. Noyes) RE: Schlesinger would like to correct a misunderstanding that arose from something he had told Dr. Noyes about work being done at the University of Chicago. He clarifies that diborane does not easily add one molecule of ammonia. Schlesinger goes on to discuss his work and hopes that it clarifies the misunderstanding before the publication of his work. [Noyes' response February 19, 1937] [Filed under: S: Individual Correspondence, Box #357.7]
• Letter to LP from W.T. Astbury RE: Astbury requests to call LP while visiting the States for Easter. [Filed under LP Correspondence: Box #6.18, file: Astbury, William T.)]

• Letter from unknown sender to Professor T.H. Morgan, RE: Discusses the Executive Council's recommendation to appoint him as Chairman of the Division of Chemistry and Chemical Engineering, which he does not want to accept at the time being. [Filed under LP Personal Safe: Drawer 2, Folder 2.005.60b]

• Letter from W. A. Noyes to Professor Schlesinger RE: Noyes thanks him for the letter of clarification to LP. He does however, suggest that he get in the habit of writing full electronic formulae with an indications of the formal charges. [Schlesinger's letter: February 17, 1937] [LP's reply: February 4, 1937] [Filed under: S: Individual Correspondence, Box #357.7]
• Telegram for George Glockler to LP RE: Asks LP's opinion open of Dr. Harold Klug no at Idaho but who sincerely wants to come to come to Minnesota for the assistant fellowship. [Filed under: G: Individual Correspondence, Box #136.15]

• Letter from Gerald Wendt to LP RE: Asks LP for his opinion concerning a letter from Professor William H. Barnes of McGill. [Filed under C: Organizational Correspondence: Box #70.5, file: Chemical Reviews]

• Letter from Richard C. Tolman, Dean of the Graduate School, C. I. T. to LP RE: Informing LP of meeting at 1:30 on February 23, 1937 consisting of Professors Millikan, Pauling, Morgan, Borsook and Tolman to consider the possibility of appointing Dr. Carl Niemann in connection with the proposed development of bio-organic chemistry. Handwritten note: "Meeting held: Decided to have Neimann come to see us." [LP Science Box 14.037, Folder 8]

• AHP writes cheque to: Connecticut Mutual Life Insurance Co., amount $70.90 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from Carsten Steffens to Gerald Wendt RE: After reading E. N. Lassettre's manuscript on the Hydrogen bond, he does recommend it for publication. [Filed under C: Organizational Correspondence: Box #70.5, file: Chemical Reviews]

• AHP writes cheque to: Bullock's amount $78.21 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: City of Pasadena amount $16.73 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: Nora Gard Miller amount $5 [Filed under LP Biographical: Box #4.014, Folder #1]
• LP Research Notebooks, RNB 09 RE: Electron diffraction data-Allene. [Filed under LP Research Notebooks: Research Notebook 9: 054-055]
• LP writes cheque to: D. Van Nostrand Co., amount $8.55 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from E. A. Guggenheim to LP RE: Thanks LP for his letter of January 7 but regrets to say that he has not received the reprints so asks for another batch. [Filed under: G: Correspondence, Box #140.2]
• Letter from LP to Arthur B. Lamb, Editor, Journal of the American Chemical Society RE: LP recommends that Professor Hildebrand's manuscript be edited slightly before publication. [LP Science Box 14.002, Folder 3]
• Letter from LP to Dr. Cady RE: LP sends reprints of the NO₃F and thanks him for his help with the work. Also, responds to Cady's question regarding the correct name for NO3F. [Cady's reply: March 25, 1937] [Filed under C: Correspondence, 1921-1957, Box #74.5]
• Letter from LP to Fellowship Board in Physics, Chemistry and Mathematics, National Research Council RE: Review of H.J. Yearian six month National Fellowship at C. I. T. describing his duties, work, etc. [LP Science Box 14.027, Folder 3]
• Letter from LP to Professor Doctor J. M. Burgers RE: LP is glad to give permission that his name be placed on the proposal to be given to the International Council of Scientific Unions. [Last letter: February 9, 1937] [Filed under LP Correspondence: Box #37.4, file: 1937]
• Letter from LP to Professor George Glockler RE: Responds to Glockler's telegram and reports that while Klug is a good man he believes that Minnesota could find someone better suited for the job. [Filed under: G: Correspondence, Box #136.15]
• Letter from LP to Professor H. I. Schlesinger RE: LP thanks Schlesinger for his letter about his work on the diamminate of diborane. [Schlesinger's letter: February 17, 1937] [Schlesinger's next letter: March 18, 1937] [Filed under: S: Individual Correspondence, Box #357.7]

• AHP writes cheque to: Athenaeum amount $8.70 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: Bode's Market amount $16.03 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: Los Angeles Gas and Electric Corp., amount $32.73 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: Robert V. Fleming Treasurer amount $3 [Filed under LP Biographical: Box #4.014, Folder #1]
• AHP writes cheque to: Southern California Telephone Co., amount $5.90 [Filed under LP Biographical: Box #4.014, Folder #1]
• Letter from Lynn Hoard to LP RE: Apologizes for not responding sooner but is pleased to learn that he is coming to Cornell next year. [LP's last letter: January 29, 1937] [Hoard's next letter: May 7, 1937] [Filed under: H: Individual Correspondence, Box #159.10]
• Letter from Myron Murphy to LP RE: Thanks LP for the invitation to work under him but at this time, due to his health and financial situation, Murphy regrets that say that he is declining the fellowship. Hopes to being to reapply for the fellowship for the following year. [LP's reply: March 4, 1937] [Filed under: M: Correspondence, Box #255.4]

• Letter from George Glockler to LP RE: Thanks LP for his opinion of Klug and wonders who else he could recommend for CIT for the appointment. [Filed under: G: Individual Correspondence, Box #136.15]
• Note from Edwin R. Buchman to LP RE: Buchman thanks LP for he is cordial reply and offer to speak with Institute authorities on his behalf. If there is a positive response from the committee he hopes to come visit and "look over the ground" before moving. Buchman wishes some type of designation be made for himself if that complies with customary practices at the Institute. [LP's letter: February 9, 1937] [LP's reply: March 4, 1937] [Filed under LP Correspondence: Box #33.2, file: (Buchman, Edwin R. 1936-1960)]

• Letter from Harold P. Klug to LP RE: Informs LP of his molecular rotation researches and tells LP that he is applying at the University of Minnesota for a position in inorganic chemistry. Asks LP if he will write a letter of recommendation directly to the University for him. [Filed under: K: Individual Correspondence, Box #199.3]
• Letter from Hugh M. Smallwood to LP RE: expresses his interest in his recent papers dealing with the "adjacent charge rule." Goes on to explain to LP that he feels something has been overlooked. [LP's response: March 12, 1937 [Filed under: S: Correspondence, box #377.7]

• Letter from LP to Professor E. D. Eastman RE: Thanks Eastman and his wife, Anne, for entertaining both he and AHP during their visit. Goes on to offer further information regarding two beta-ray bands reported for potassium. [Filed under: E: Individual Correspondence, (Eastman-Eide) Box #106.1]