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January
  • Lecture Notes: The Structure of Ionic Crystals, 40p (Winter term 1930-31) [LP Bio: Academia 1.010, Folder 2]

January 2
  • AHP writes cheque to: City of Pasadena amount $2.96 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: City of Pasadena amount $3.86 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: F. C. Nash and Company amount $21.93 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Los Angeles Gas and Company amount $1.96 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Southern California Telephone Company amount $3.60 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: William D. Crane amount $95.50 [Filed under LP Biographical: Box #4.011, Folder #2]

January 3
  • AHP writes cheque to: Mrs. M. M Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Parmelee-Dohrmann amount $122.44 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP writes cheque to: Pashgian Brothers amount $259.25 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Letter from P. Derby to LP RE: Thanking LP for the card he and his wife received. [Filed under: Debye, Peter, 1930-1950: Box #90.1]

January 5
  • AHP writes cheque to: The Great A & P Tea Co. amount $1.82 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP writes cheque to: The University of Chicago Press amount $1.93 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Letter from James S. Thompson, VP of the McGraw-Hill Book Company Inc., to LP RE: Thanks LP for his letter and will write in a few days. Thinks LP's proposal is interesting but would like to discuss it with associates before he makes a definite reply. LP handwritten notes on back. [Letter from LP to Thompson December 31, 1930] [Filed under LP Personal Safe: Drawer 3, Folder 3.018]

January 6
  • LP writes cheque to: Richard D. Morgan amount $100 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP writes cheque to: Richard D. Morgan amount $50 [Filed under LP Biographical: Box #4.011, Folder #2]

January 8

January 9

January 10
  • AHP writes cheque to: Mrs. M. M. Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP Research Notebooks, RNB 08 RE: Brief note on experimental work with Galena [Filed under LP Research Notebooks: Research Notebook 8: 067]

January 12
  • AHP writes cheque to: D. S. Wilkinson amount $1.04 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Manuscript: "The Treatment of Multiple Crossovers", January 12, 1931; Assorted notes re: genetics. [LP Science Box 8.001, Folder 2]

January 14
  • AHP writes cheque to: A. C. Vroman amount $5 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Athenaeum amount $3.05 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: MacMarr Stores, Inc. amount $5 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: The Faculty Club amount $0.50 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Letter from LP to A. R. Goldfarb RE: LP advises Goldfarb to apply for a teaching fellowship at CIT, but warns him about the limited space. [Goldfarb's letter January 9, 1931; Goldfarb's reply January 22, 1931] [Filed under G: Individual Correspondence, Box #136.18]

January 15
  • Handwritten note [in German] from Walter (marked by LP “HEITLER”) to LP. [Filed under LP Personal Safe: Drawer #4, Folder #4.104]
  • Letter from Donald H. Andrews to LP RE: Explains his interest in LP's work and asks for a reprint of his article in the recent issue of the Chemical Review. Requests to be added to his list to receive future articles. [Filed under LP Correspondence: Box #6.11]

January 16
  • AHP writes cheque to: General Contract Purchase Corp. amount $23.30 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Letter from Richard M. Bozorth, Bell Telephone Laboratories, to LP, RE: Tells LP that he has looked over his data on MgPt (CN)4 7H20. Encloses some prints of Laue photographs, listing the ones he thinks he has analyzed. Explains that he feels his data rules out LP's proposed structure. Asks why LP objects to putting the Mg and Pt so close together. Asks LP to let him know if he's made any errors in his calculations. Handwritten notes by LP: "I have marked two spots I think may require large unit" and "Ansd Feb. 13. Plot of Laue on (110) sent, requiring a=20 +!, c= 6+!. [Filed under LP Personal Safe: Drawer 3, Folder 3.018.11]
  • Letter to the Committee on Grants-in-Aid of Research, National Research Council from LP RE: LP applies for a grant of $1000 to be used in paying half the salary of James S. Sturdivant in order to continue the experimental determination of the distribution of electrons forming an electron-pair bond. [Reply January 22, 1931] [LP Science Box 14.027, Folder 1]

January 17
  • AHP writes cheque to: Mrs. M. M. Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Letter from James S. Thompson, VP of the McGraw-Hill Book Company Inc., to LP RE: McGraw-Hill faces difficulties with projecting a new series mainly due to profit issues. As an advanced series, it would need to be continuously updated and republished and not many people would purchase them. Also they feel that many of the topics can be incorporated into the current International Series of both Chemistry and Physics, and asks if LP feels the same. [Letter from LP to Thompson December 31, 1930] [Filed under LP Personal Safe: Drawer 3, Folder 3.018.159a]

January 19
  • AHP writes cheque to: Crown City Mattress Works amount $4 [Filed under LP Biographical: Box #4.011, Folder #2]

January 21

January 22

January 24
  • AHP writes cheque to: MacMarr Stores, Inc. amount $5 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Mrs. M. M.. Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]

January 26
  • AHP writes cheque to: D. S .Wilkinson amount $1.01 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Returned check charge for AHP amount $4

January 27

January 28
  • Returned Check Charge to AHP for $46

January 29

January 31
  • AHP writes cheque to: Mrs. M. M. Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP writes cheque to: American Physical Society amount $13 [Filed under LP Biographical: Box #4.011, Folder #2]