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April
  • Diary: 2x3" plain diary labeled "Address" on the cover, and "Trip East April-May 1936" on the front page in LP's writing. [Filed under LP Persona; Safe: Drawer 4, Folder 4.007]
  • Publication: "The magnetic properties and structure of hemoglobin, oxyhemoglobin and carbonmonoxyhemoglobin," LP and Charles D. Coryell. Proceedings of the National Academy of Sciences, 22, pp. 210-216. [LP Publications: 1936p.4]

April 1
  • AHP writes cheque to: Lola Labadie amount $67.85 [Filed under LP Biographical: Box #4.013, Folder #2]
  • LP writes cheque to: The Williams and Wilkins Company amount $7 [Filed under LP Biographical: Box #4.013, Folder #2]

April 2
  • LP writes cheque to: A. J. Garrissere amount $3 [Filed under LP Biographical: Box #4.013, Folder #2]
  • Letter from LP to Professor Teller RE: LP is glad that the conference in Washington will be devoted to informal discussions and not to long lectures. LP plans to prepare a short introduction about the chemical bond. [Teller's letter: March 28, 1936] [Filed under: Teller, Edward: Correspondence, Box #406.1]
  • Letter from LP to S. Goudsmit. RE: Informs Sam that he and AHP will stop in Ann Arbor on April 22 and would like to see him. Will be on their way to the Washington meetings. [Filed under LP Correspondence: G: Individual Correspondence, Box #137.4]

April 4

April 5
  • LP writes cheque to: Fortner and Loud, Inc. amount $7.91 [Filed under LP Biographical: Box #4.013, Folder #2]
  • Letter from LP to McGraw-Hill Book Company RE: LP requests one copy of Pauling and Wilson's "Introduction to Quantum Mechanics," be sent to Professor Dr. Karl Jellinek at the Institute der Technischen Hchschule. [Filed under: LP Books, 1935b.1]

April 6
  • LP Research Notebooks, RNB 10 RE: Notes and electron diffraction data - B5H9 [LP and Sidney Weinbaum]. [Filed under LP Research Notebooks: Research Notebook 10: 088-089]

April 7

April 8
  • AHP writes cheque to: Katharine Putnam Crane amount $78 [Filed under LP Biographical: Box #4.013, Folder #2]
  • Letter from LP to Dr. W. H. Rodebush RE: LP is glad to hear that the revision of the notes on the Third Law of Thermodynamics is satisfactory. [LP Manuscripts of Articles, 1936a.2]
  • Letter from LP to Professor Ermon Eastman RE: LP encloses a letter and paper from Rodebush and a copy of LP's reply to him. LP suggests that they don't argue with Rodebush but that if Eastman wishes to write to him he may do so. [LP Manuscripts of Articles, 1936a.2]
  • Letter from LP to Professor R. C. L. Mooney RE: LP is sorry to hear that he has not been feeling well this winter and that consequently his work has been slowed. LP believes that it is worthwhile for Mr. Beach to begin work on the fluorochloroidides for several reasons. [Filed under: M: Correspondence, Box #255.3]
  • Letter from Vice President of McGraw-Hill Book Company, Inc to LP RE: Is delighted to learn that LP will be visiting New York however he will be absent during most of his stay. [Filed under: LP Books, 1935b.1]
  • Letter from W. A. Noyes to LP RE: Noyes explains to LP why the parachor is a determination of the molecular volume at the critical temperature when the forces between the molecules become zero and the distance between them have no effect on their natural volume. [LP's letter: April 4, 1936] [LP's reply: April 14, 1936] [Filed under: N: Individual Correspondence, Box #279.3]

April 9
  • AHP writes cheque to: Nora Gard Miller amount $9 [Filed under LP Biographical: Box #4.013, Folder #2]
  • LP writes cheque to: Treasurer, State of California amount $7.98 [Filed under LP Biographical: Box #4.013, Folder #2]
  • Letter from W. A. Noyes to LP RE: Noyes has further considered LP's suggestion that x-ray measurements for the benzene were made with the vapor, and asks if the changes stated in the letter are satisfactory to LP. [LP's reply: April 14, 1936] [Filed under: N: Individual Correspondence, Box #279.3]

April 10
  • Letter from W. A. Noyes to LP RE: Noyes has been informed that the paper will the published in the May Journal and that he will have the proof before April 20. Apologizes for his misapprehension and informs LP that he was correct in his previous statements. [LP's reply: April 14, 1936] [Filed under: N: Individual Correspondence, Box #279.3]
  • Letter from William E. Vaughan to LP RE: Vaughn is sending, by Parcel Post, a small sample of mesitylene. [LP's letter: April 10, 1936, LP's reply: April 14, 1936] [Filed under: V: Individual Correspondence, Box #425.3]

April 11

April 13
  • AHP writes cheque to: Marije Euvrard amount $32.80 [Filed under LP Biographical: Box #4.013, Folder #2]
  • LP writes cheque to: The MacMillan Company amount $2.23 [Filed under LP Biographical: Box #4.013, Folder #2]
  • Letter from Sam Goudsmit to LP. RE: Asks why he is only staying for one day. Invites AHP to spend the day of the conference with his wife. Offers to make reservations at a hotel for them. [Filed under LP Correspondence: G: Individual Correspondence, Box #137.4]

April 14

April 15
  • AHP writes cheque to: Edwin Porter amount $1.60 [Filed under LP Biographical: Box #4.013, Folder #2]

April 16
  • AHP writes cheque to: A. H. Shaw amount $1.40 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Adohr Milk Farms amount $12.90 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Sanitary Laundry amount $3.55 [Filed under LP Biographical: Box #4.013, Folder #2]
  • LP writes cheque to: Santa Fe Co. amount $380.78 [Filed under LP Biographical: Box #4.013, Folder #2]
  • Letter from Harold F. Wall to LP RE: Inquires about the mathematical paper showing that simple molecules can rotate in the solid state, mentioned in an article by W. A. Yager on Dielectronic Polarization. Asks LP for the reference publication of this article. [Filed under: W: Individual Correspondence, Box #431.3]

April 17
  • AHP writes cheque to: Arroyo Poultry Farm amount $6.88 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Athenaeum amount $8.54 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Bullock's amount $35.98 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Children's Home Society amount $2 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: City of Pasadena amount $8.06 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Clara Gilchrist amount $7.75 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Dr. E. H. McMillan amount $3 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: F. C. Nash and Company amount $11.69 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Gould and Attlesey amount $8 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: J. Herbert Hall amount $2.58 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Lilienwall and Donovan amount $5.40 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Los Angeles Gas and Electric Corporation amount $10.22 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Model Grocery Company amount $10.01 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Office of City Assessor amount $3.78 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: S. California Telephone Company amount $3 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Standard Oil Company amount $2.51 [Filed under LP Biographical: Box #4.013, Folder #2]
  • AHP writes cheque to: Violet Sardine amount $4.75 [Filed under LP Biographical: Box #4.013, Folder #2]

April 20
  • Letter from A. Kapustinsky to LP RE: Is very sorry that there is no possibility to speak with LP before leaving for Europe. [Filed under: K: correspondence, box #200.1]
  • Letter from the Secretary of Chemical Reviews to Dr. Wendt cc. to LP RE: Lists (as per the board's recommendations) who the Council at Kansas City elected for associate editors for Chemical Reviews. [Filed under C: Organizational Correspondence: Box #70.5]

April 21
  • Letter from E. Bright Wilson, Jr. to Editorial Secretary, McGraw-Hill, Co. RE: Encloses a list of corrections for the new printing of the Introduction to Quantum Mechanics. [Filed under: W: Individual Correspondence, Box #438.5]
  • Letter from M.S. Dunn to LP RE: is pleased with LP's decision to provide Mr. Albrecht with research opportunities along with a stipend. As to the supply of amino acids Dunn will provide any necessary and available through U.C.L.A. [Filed under LP Correspondence: Box #4.1, file: (Gustav, Albrecht)]

April 22
  • Letter from Chas. G. Thatcher to LP RE: Inquires to LP about the possibility of coming to CIT next year to do graduate work in mechanical engineering. However, he has heard that CIT is not known for their engineering work. [LP's reply: May 15, 1936] [Filed under: T: Correspondence, Box #410.1]
  • Letter from Michael Heidelberger to LP RE: Is sorry to report that he will not be in New York while LP will be East. Explains that he will be in Sweden during that time but hopes to be able to meet sometime after his return. Offers his assistance while he is overseas. [Filed under: H: Individual Correspondence, Box #153.3]

April 23  (Rochester, NY)
  • Correspondence: The Structure of Hemoglobin and Other Coordination Compounds of Iron, Rochester Section of the American Chemical Society, Rochester, New York [LP Speeches 1936s.2]
  • Letter from Charles D. Coryell to LP RE: Gives LP a "Progress Report" of his work in the lab. [Filed under C: Individual Correspondence: Box #68.2]
  • Letter from William E. Vaughan to LP RE: Vaughn is sending another sample of the buitadienetetrabromide that was lost in the mail. [LP's letter: April 14, 1936, LP's reply: May 19, 1936] [Filed under: V: Individual Correspondence, Box #425.3]

April 24  (New York, NY)
  • American Philosophical Society, Certificates of membership [LP Awards and Honors 1936h.1]
  • Letter from Loyal Clarke to LP RE: Clarke explains his interest in LP's paper in the December issue of J. A. C. S. on the entropy of ice and asks for a reprint of the article if available. Asks LP's advice on the entropy of graphite. "P.S. People here have evidenced interest in your beard. Do you still have it?" [LP's response: May 19, 1936] [Filed under C: Correspondence, 1921-1957: Box #74.4]

April 27  (Washington, DC)
  • Letter from W. D. Leech, Australian Food Research Laboratories RE: Informs LP that he has received his letter from several weeks ago but in talking to Mr. Miller just a few days ago he thinks it impossible to for him to arrive to work this coming year. Leech explains to LP that he and his colleagues have been investigating the general characteristics of the Australian wheat and the nature of the protein. [Filed under: L: Correspondence, Box #230.2]

April 29  (Washington, DC)
  • Letter from G. W. Stewart to LP RE: encloses two photographs, and requesting that LP autograph one of them before sending it back. [Filed under: S: Correspondence, Box #377.6]

April 30
  • Letter from H. T. Clark to LP RE: Is looking forward to LP's visit in early May and is anxious for his to meet a promising young man, Dr. Samuel Gurin, who is currently holder of a National Research Council Fellowship in the Department of Chemistry at the University of Illinois. [Filed under LP Correspondence: Box #66.4]
  • Letter from John A. Fleming and John R. Lapham to LP RE: Thanks LP that he was able to attend the Second Washington Conference on Theoretical Physics and asks LP for his opinion of the conference. [Filed under: L: Correspondence, Box #230.2]
  • Letter from P. P. Ewald to LP RE: Ewald thanks LP for his book and comments on how impressed he is with his work. [Filed under: E: Individual Correspondence (Enstrom-Eyering) Box #110.4]