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• Date unknown: Letter from S. Goudsmit to LP RE: Asks LP if he will be attending the meeting in Washington and if so suggests that they travel together. Also, comments that he heard from McGraw-Hill Books that the book is completed. He is very anxious to see a completed copy. [Filed under: LP Books, 1930b.4]

• Letter from William Lloyd Evans, Ohio State University to LP RE: Inviting LP to lecture at Ohio State University while on his trip back East. [Filed under E: Individual Correspondence, Box #110.3]
• Manuscript: The Theory of Radioactive Decomposition, Sixth Lecture, Berkeley Lectures, Second Series -- Introduction to Quantum Mechanics of Aperiodic Processes, University of California, Berkeley, April 2, 1930. [LP Science Box 2.002, Folder 2/LP Speeches 1930s.5]

• AHP writes cheque to: Arden Sanitary Gold Seal Dairy amount $2.24 [Filed under LP Biographical: Box #4.011, Folder #1]
• LP writes cheque to: American Trust Company amount $50 [Filed under LP Biographical: Box #4.011, Folder #1]
• Letter from George E. Hale to Dr. Arthur A. Noyes, RE: Thanks him for LP's letter and says that they decided not to build a huge magnet in France because it is too expensive and not useful enough, but that they might build a solenoid magnet of Anderson's design sometime. Apologizes that they aren't in a position to offer a position to Dr. Freed. [Filed under LP Personal Safe: Drawer 2, Folder 2.018.3]
• Manuscript: The Theory of Radioactive Decomposition (cont), Seventh Lecture, Berkeley Lectures, Second Series -- Introduction to Quantum Mechanics of Aperiodic Processes, University of California, Berkeley, April 4, 1930. [ LP Science Box 2.002, Folder 2/LP Speeches 1930s.6]

• AHP writes cheque to: Huston's amount $7.50 [Filed under LP Biographical: Box #4.011, Folder #1]
• AHP writes cheque to: Pioneer Laundry amount $3.27 [Filed under LP Biographical: Box #4.011, Folder #1]

• Manuscript: Pulling Electrons out of Metals by Strong Fields, Eighth Lecture, Berkeley Lectures, Second Series -- Introduction to Quantum Mechanics of Aperiodic Processes, University of California, Berkeley, April 7, 1930. [LP Science Box 2.002, Folder 2/LP Speeches 1930s.7]

• Letter from Adeline M. Morrill to LP, RE: Encloses a letter from Dr. Hale and the results of the qualifying examination, at the request of Dr. Noyes. Informs LP that Dr. Noyes fell while in Palm Springs, so he won't be around for a few more weeks. Lets LP know that he has a package waiting for him at the Post Office which he must pick up in person. [Filed under LP Personal Safe: Drawer 2, Folder 2.018]
• The Structure of Line Spectra, by Linus Pauling and Samuel Goudsmit. New York: McGraw-Hill, 1930, 263 pages. [LP Books Box: 1930b2.1]

• Letter from James S. Thompson, VP, McGraw-Hill Book Co., to LP and Professor Goudsmit RE: Thompson is happy to send both LP and Goudsmit cash and three complimentary copies of Structure of Line Spectra. Explains that the preliminary announcements have attracted considerable attention. [Filed under: LP Books, 1930b.4]
• Manuscript Notes: The Rotational Motion of Molecules in Crystals, Ninth and Tenth Lectures, Berkeley Lectures, Second Series -- Introduction to Quantum Mechanics of Aperiodic Processes, University of California, Berkeley, April 9 & 11, 1930. [LP Science Box 2.002, Folder 2/LP Speeches 1930s.8]

• LP writes cheque to: American Trust Company amount $50 [Filed under LP Biographical: Box #4.011, Folder #1]

• Letter from W.L. Bragg, the Physical Laboratories of the University of Manchester, to LP, RE: Tells LP that he and his wife will try to find a suitable place for LP to stay in Didsbury. Explains that he admired LP's paper on the micas and says that West's measurements on the micas confirm LP's structure. Tells LP that the only silicates they've done lately is an examination by Taylor of analcite and that they've been concentrating on Fourier analysis. Notes that they are starting to prepare a new edition of X-rays and Crystal Structure. [Filed under LP Personal Safe: Drawer 3, Folder 3.018.12]
• Manuscript Notes: The Rotational Motion of Molecules in Crystals, Ninth and Tenth Lectures, Berkeley Lectures, Second Series -- Introduction to Quantum Mechanics of Aperiodic Processes, University of California, Berkeley, April 9 & 11, 1930. [LP Science Box 2.002, Folder 2/LP Speeches 1930s.8]

• AHP writes cheque to: Mrs. Donna Smith amount $6.09 [Filed under LP Biographical: Box #4.011, Folder #1]
• AHP writes cheque to: Pioneer Laundry amount $3.61 [Filed under LP Biographical: Box #4.011, Folder #1]

• Berkeley Lectures: "The Nature of the Chemical Bond; Lecture 1." [LP Science Box 2.002, Folder 2]

• LP writes cheque to: J. P. Wall amount $11.80 [Filed under LP Biographical: Box #4.011, Folder #1]

• AHP writes cheque to: Rita Loudermilk amount $20 [Filed under LP Biographical: Box #4.011, Folder #1]

• Letter from A. R. Goldfarb to Chairman, Committee on Graduate Study and Research CIT, (directed by LP) RE: Requesting an application form for a research fellowship in chemistry. [Reply to Goldfarb April 22, 1930] [Filed under G: Individual Correspondence, Box #136.18]

• LP writes cheque to: Central-Shuey Creamery amount $3.57 [Filed under LP Biographical: Box #4.011, Folder #1]

• Letter from Richard C. Tolman, Chairman, Committee on Graduate Study CIT to A. R. Goldfarb RE: Encloses application for admission as requested. [LP's letter to Goldfarb April 17, 1930] [Filed under G: Individual Correspondence, Box #136.18]

• AHP writes cheque to: Connecticut Mutual Life Insurance Company amount $36.08 [Filed under LP Biographical: Box #4.011, Folder #1]
• AHP writes cheque to: Mabel S. Beckman amount $1.25 [Filed under LP Biographical: Box #4.011, Folder #1]