Major Events On February 10, Peter Jeffress, Pauling’s second son, is born. On April 6, while he is teaching in Berkeley, Pauling’s theory of hybrid bond orbitals is published in the Journal of the American Chemical Society: "The Nature of the Chemical Bond. Application of Results Obtained from the Quantum Mechanics and from a Theory of Paramagnetic Susceptibility to the Structure of Molecules." This is the first of what will become a very important and influential series of papers on the nature of the chemical bond. Pauling himself calls this paper "very important—the best work I’ve ever done." In June, Pauling finishes his paper on one-electron and three-electron bonds (it is published, as the second in his series on the nature of the chemical bond, later in the year). Pauling is made full professor at CIT. On July 1, E. Bright Wilson, Jr. arrives at CIT (he will become an important collaborator of Pauling’s). On September 2, Pauling travels to Buffalo, New York to receive the first award of the A.C. Langmuir Prize at a meeting of the American Chemical Society. In the fall, he completes his third paper in the nature-of-the-chemical-bond series on the transition from ionic to covalent bond types. Chronology by Robert Paradowski. Travel March 22 - April 17  Berkeley, CA (27) August 31 - September 4  Buffalo, NY (5)

See the Paulings' activities in January 1931 Snapshot Linus and Peter Pauling. 1931. Larger Image / More Information Statistics 655 activity listings 50 scanned documents 42 full-text transcripts

Activity Listings - 1931 (No Date)

• Manuscript Notes, Reprint: "Comparison of my eqns. and Hyll", [re: article "ber die Elektronenterme des Wasserstoffmolekls", ("Overview of the electron terms of the Hydrogen molecule") by Egil A. Hylleraas] [LP Science Box 2.004, Folder 4]
• Manuscript Notes: "Diatomic Molecules" (1931) [LP Science Box 3.003, Folder 9]
• Manuscript Notes: "Electric Moments and Bond Type" (1931) [LP Science Box 3.003, Folder 8]
• Manuscript Notes: "The Carbon-Oxygen Bond" (1931) [LP Science Box 3.003, Folder 7]
• Newspaper Clipping: "Professor Wins Chemistry Prize," Great Falls (Montana) Tribune RE: Announcement regarding LP winning the A. C. Langmuir prize for chemistry. [Newspaper Clippings: 1931n.11]
• Personal History Record and Application Form RE: Henri Brasseur applies for C.R.D. Advanced Fellowship for Study in the United States. November 5, 1930. [LP Personal Safe: Drawer 3, Folder 3.018.31]
• Photo: Ava Helen Pauling sitting and holding baby Peter Pauling. "3 weeks old" Photographer unknown. Black and white print. [Ship #609] [LP Photo Box, 1931i.12]
• Photo: Ava Helen Pauling sitting on a couch, holding baby Peter Pauling. Photographer unknown. Black and white print. [Ship #600] [LP Photo Box, 1931i.20]
• Photo: Ava Helen Pauling sitting on the front steps of a house, holding baby Peter Pauling. Photographer unknown. Black and white print. [Ship #618] [LP Photo Box, 1931i.21]
• Photo: Ava Helen Pauling standing outside, holding baby Peter Pauling. Photographer unknown. Black and white print. [Ship #608] [LP Photo Box, 1931i.11]
• Photo: Ava Helen Pauling standing outside, holding baby Peter up to her face. Photographer unknown. Black and white print. [Ship #607] [LP Photo Box, 1931i.10]
• Photo: Ava Helen and Linus Pauling Jr. Photographer unknown. Black and white print. [Ship #998] [LP Photo Box, 1931i.3]
• Photo: Ava Helen and baby Peter Pauling sitting outside, in front of a house. Photographer unknown. Black and white print. [Ship #523] [LP Photo Box, 1931i.7]
• Photo: Ava Helen holding baby Peter Jeffress Pauling against her chest. Photographer unknown. Black and white print. [LP Photo Box, 1931i.1]
• Photo: Ava Helen holding up baby Peter Pauling. Photographer unknown. Black and white print. [Ship #868] [LP Photo Box, 1931i.2]
• Photo: Ava Helen, Peter, and Linus Pauling Jr. Photographer unknown. Black and white print. [Ship #601] [LP Photo Box, 1931i.5]
• Photo: Baby Peter Pauling lying on a blanket with his head down. Photographer unknown. Black and white print. [Ship #611] [LP Photo Box, 1931i.14]
• Photo: Baby Peter Pauling lying on a blanket, Linus Pauling Jr. sitting behind him. Photographer unknown. Black and white print. [Ship #613] [LP Photo Box, 1931i.16]
• Photo: Baby Peter Pauling lying on a blanket, Linus Pauling Jr. sitting behind him. Photographer unknown. Black and white print. [Ship #616] [LP Photo Box, 1931i.19]
• Photo: Baby Peter Pauling lying on a blanket, holding his head up. "Peter Jeffress Pauling, 2 mo." Photographer unknown. Black and white print. [Ship #610] [LP Photo Box, 1931i.13]
• Photo: Baby Peter Pauling lying on a blanket, holding his head up. "Peter Jeffress Pauling, 2 mo." Photographer unknown. Black and white print. [Ship #615] [LP Photo Box, 1931i.18]
• Photo: Baby Peter Pauling sleeping on a bed. "Peter Pauling / 3 months" "A Portrait by G. Edwin Williams Co. / 668 East California St., Pasadena." black and white print. [Ship #764] [LP Photo Box, 1931i.23]
• Photo: Baby Peter Pauling wrapped and propped up on blankets, lying on his back. Photographer unknown. Black and white print. [Ship #612] [LP Photo Box, 1931i.15]
• Photo: Baby Peter Pauling wrapped and propped up on blankets, lying on his back. Photographer unknown. Black and white print. [Ship #614] [LP Photo Box, 1931i.17]
• Photo: Baby Peter Pauling, smiling. "Peter Pauling / 3 months" "A Portrait by G. Edwin Williams Co. / 668 East California St., Pasadena." black and white print. [Ship #763] [LP Photo Box, 1931i.22]
• Photo: Baby Peter and Linus Pauling Jr. sitting in a park. Linus Jr. wearing a horizontally striped sweater. Photographer unknown. Black and white print. [Ship #526] [LP Photo Box, 1931i.9]
• Photo: Howard J. Lucas, Ava Helen Pauling, Otto Schmidt, and Linus Pauling sitting amid a rocky landscape. Palm Canyon. "Palm Canyon [Howard J.] Lucas, AHP, Director Otto Schmidt of IG Akteingeselfshaft, LP 1931" Photographer unknown [Mrs. Otto Schmidt?]. Black and white print. [Ship #924] [LP Photo Box, 1931i.26]
• Photo: Linus Jr. and Peter Pauling sitting on a little wagon outdoors. "Christmas Greetings from Helen and Linus Pauling / Linus Jr. and Peter / 1931 / [Written on the back:] 1409" Photographer unknown. Black and white print. [Ship #1562] [LP Photo Box, 1931i.28]
• Photo: Linus Pauling Jr. sitting and holding baby Peter Pauling on his shoulders. Photographer unknown. Black and white print. [Ship #528] [LP Photo Box, 1931i.36]
• Photo: Linus Pauling Jr. sitting outside, holding baby Peter Pauling. Peter with his right index finger in his mouth. Photographer unknown. Black and white print. [Ship #524, #3876] [LP Photo Box, 1931i.8]
• Photo: Linus Pauling Jr. standing at the base of a desert cliff. Painted Canyon, California. "Painted Canyon, CA 1931 LP Jr" Photographer unknown. Black and white print. [Ship #888, #3878] [LP Photo Box, 1931i.25]
• Photo: Linus Pauling Jr. standing outside with Peter Pauling on his shoulders. "53 LP Jr. holding Peter 1931" Photographer unknown. Black and white print. [Ship #3808, #527] [LP Photo Box, 1931i.30]
• Photo: Linus Pauling holding Baby Peter Pauling next to a life-size doll. Photographer unknown. Black and white print. [Ship #866] [LP Photo Box, 1931i.24]
• Photo: Linus Pauling sitting down with baby Peter Pauling. Academy of Achievement photo credit, courtesy of AIP Niels Bohr Library. Photograph by S.A. Goudsmit. Black and white print. [LP Photo Box, 1931i.29]
• Photo: Linus and baby Peter Pauling sitting outside on a blanket. " LP + Peter / 1931 / 1-copy veg [?] / 1-5 x 7 matte / 1-8 x 10 matte / 0903." Photographer unknown. Black and white print. [Ship #522] [LP Photo Box, 1931i.6]
• Photo: Linus holding up baby Peter Pauling. Photographer unknown. Black and white print. [Ship #617] [LP Photo Box, 1931i.4]
• Photo: Mary Brown's baby daughter Phoebe Brown lying naked on a blanket. "Mary's Daughters, For Grandma from Phoebe, 9 months." Photographer unknown. Black and white print. [Ship #478] [LP Photo Box,1931i.35]
• Photo: Peter Pauling in a bassinet. Peter scowling and looking to the right. Photographer unknown. Black and white print. [Ship #521] [LP Photo Box, 1931i.39]
• Photo: Peter Pauling in a white sweater. Photographer unknown. Black and white print. [Ship #518] [LP Photo Box, 1931i.33]
• Photo: Peter Pauling lying on his stomach. "G. Edwin Williams, Co., Pasadena / A Portrait by G. Edwin Williams Co. / 668 East California St., Pasadena." Mounted in a folio, black and white print. [Ship #788] [LP Photo Box, 1931i.31]
• Photo: Peter Pauling sitting on Linus Pauling Jr.'s lap outside. Peter smiling, Linus Jr. looking confused. [Stamped, tilted sideways and upside down] "11672" Photographer unknown. Black and white print. [Ship #3879] [LP Photo Box, 1931i.37]
• Photo: Peter Pauling smiling, lying outside on a white blanket. Photographer unknown. Black and white print. [Ship #520] [LP Photo Box, 1931i.38]
• Photo: Peter Pauling smiling. "A Portrait by G. Edwin Williams Co. / 668 East California St., Pasadena.", black and white print. [Ship #2421] [LP Photo Box, 1931i.32]
• Photo: Peter Pauling wearing a white sweater. Photographer unknown. Black and white print. [Ship #519] [LP Photo Box, 1931i.34]
• Photo: Peter, Ava Helen, Linus Jr., and Linus Pauling standing in front of their home. Ava Helen holding Peter. "1932, front door 1245 Arder Road PJP, AHP, LP Jr, LP (AP photo, courtesy of PJP)" "Return to LP Jr." Photographer unknown. Color print. [Ship #3937] [LP Photo Box, 1931i.40]
• Publication of the American Chemical Society. LP selected as the first recipient of the American Chemical Society Award in Pure Chemistry in 1931. [Filed under LP Biographical: Box 6.002, Folder 2.1]
• Publication: Written by LP and Roscoe G. Dickinson: "Objections to a proof of molecular asymmetry of optically active phenylaminoacetic acid." Journal of the American Chemical Society, 53. [LP Publications, 1931p.5]
• Publication: Written by LP: "Quantum mechanics and the chemical bond." Physical Review, 37. [LP Publications, 1931p.2]
• Publication: Written by LP: "The determination of crystal structure by X-rays." Annual Survey of American Chemistry, V. [LP Publications, 1931p.1]
• Publication: Written by LP: "The nature of the chemical bond. II. The one-electron bond and the three-electron bond." Journal of the American Chemical Society, 53. [LP Publications, 1931p.4]
• Reprint: Bridgman, P. W. Recently discovered complexities in the properties of simple substances. Transactions, American Institute of Mining and Metallurgical Engineers. General Vol.: 17-37. [LP Science Box 14.037, Folder 1]
• Reprint: Ebert L. ber Reinheit und polymorphe Umwandlung des Pentaerythrits. Berichte der Deutschen Chemischen Gesellschaft 64 (1): 114. [LP Science Box 14.037, Folder 1]
• Reprint: Kracek, F. C., E. Posnjak, S. B. Hendricks. Gradual transition in sodium nitrate. II. The structure at various temperatures and its bearing on molecular rotation. Journal of the American Chemical Society 53: 3339. (Attached hand-written note) [LP Science Box 14.037, Folder 1]
• Reprint: Stern, T. E. The chemical constants of the vapours of hydrogen and of hydrogen chloride; and the entropy change accompanying the reaction H2 + Cl2 2HCl. Proceedings of the Royal Society 133: 303-310. [LP Science Box 14.037, Folder 1]
• Reprint: ber die Beugung und Bremsung der Elektronen, written by Von A. Sommerfeld. [Filed under: Sommerfeld, Arnold: Reprints, Correspondence, Box #366.4]
• Research Notes, Correspondence re: Magnetic moments, chemical combination and inter-atomic distances for assorted metallic compounds, LP and Maurice Huggins, 1931-1932. [LP Science Box 5.001, Folder 8]