- Letter from Dr. Arthur H. Snell, Director, Physics Division, Oak Ridge National Laboratory, to LP RE: Notifies him of discoveries the lab has made regarding ionization and the loss of an inner electron. [Letter from LP to Snell March 6, 1957] [Filed under LP Correspondence: (S: Correspondence, 1957), #380.1]
- Letter from Dr. Siegmund Schmidt to LP RE: Requests LP's information on atom bombs and the effects of testing them. Includes copies of documents pertaining to nuclear tests. Letter and ancillary materials in German. [Filed under LP Correspondence: (Schmitt, Francis O), #357.9]
- Letter from LP to Awards Officer, National Research Council, Canada, RE: Recommends Dr. R. Srinivasan for a post-doctoral fellowship. Describes the work he did when LP knew him, states that he did a good job, was well trained, and has a good personality. Mentions that he does not know much about his abilities or how limited his training is because of limited observations of him. [Letter from LP to Srinivasan January 11, 1957, Letter from Marshall to LP January 21, 1957] [Filed under LP Correspondence: (S: Correspondence, 1957), #380.1]
- Letter from LP to Dr. H.S. Diehl, University of Minnesota Medical School, RE: Thanks him for the invitation to be the Duluth Clinic Lecturer in May 1958 but requests more time to make a final decision about whether to accept or not. [Letters from Diehl to LP November 26, 1956, January 18, 1957] [Filed under LP Correspondence: (D: Correspondence, 1957), #98.22]
- Letter from LP to Dr. John E. Wilson, School of Medicine, University of North Carolina, RE: Thanks Wilson for his invitation to visit the Enzyme Club and the Department of Psychiatry at the University of North Carolina that spring, but says that he can not accept, because doing to much traveling and giving too many lectures has caused damage to his health. [Letter from Wilson to LP January 8, 1957] [Filed under LP Correspondence: (W: Correspondence, 1953-1959), Box #444, Folder #444.5]
- Letter from LP to Dr. Kurt J. Isselbacher RE: Asks Isselbacher to send a small sample of galactose—phosphate and a description of the method he uses to test the blood for galactosemia. Drs. Wright and Perry would like to make a trial of this new method. [Filed under LP Science: Orthomolecular Medicine and Mental Health: Materials re: Ford Foundation grants for the study of mental disorders, 1955-1956: Box #11.089, Folder #89.14]
- Letter from LP to Dr. R. Srinivasan RE: Notifies that he wrote a letter of recommendation for him and hopes that he will be able to get the position since he has not been able to find a position in India. [Letter from Srinivasan to LP January 2, 1957, Letter from LP to Awards Officer January 11, 1957] [Filed under LP Correspondence: (S: Correspondence, 1957), #380.1]
- Letter from LP to Joseph Schvimmer RE: Thanks him for pointing out an error in College Chemistry which dealt with the electron shells of nitrogen. Handwritten note in right top corner: "S's letter ret'd to LP." [Filed under LP Books: 1955b.3]
- Letter from LP to Mr. Julius Popper RE: Thanks for his letter, discusses the problem with schizophrenia and states that he and his colleagues are not working in that area now. [Letter from Popper to LP October 25, 1956] [Filed under LP Science: Box #11.089, Folder #89.6]
- Letter from LP to Professor Gilbert Stork, Department of Chemistry, Columbia University, RE: Notifies him that the Chemistry Department at Caltech has recommended to the Administration that he be offered a position as organic chemist. Outlines what his job expectations will be, when he should hear for sure on whether or not he got the job, and expresses his hope that he will accept. [Letter from Watson to Stork February 5, 1957] [Filed under LP Correspondence: (Stork, Gilbert), #369.4]
- Letter from LP to Ricardo Ferreira. [Letters from Ferreira to LP December 13, 1956, January 22, 1957] [Filed under LP Correspondence: (Ferreira, Ricardo), #119.7]
11 January 1957
Mr. Ricardo Ferreira
Caixa Postal 527
Dear Mr. Ferreira:
Mr. Yamane has brought me your letter of 13 December. I have read it, and also the summary of your article published in Ciencia e Cultura in 1955.
I may say that it is my opinion that you are attempting to use the rough equations suggested by Sanderson and Halsinski in a more precise way than is justified. These equations are only approximate equations; there is considerable question as to the range of values of difference in electronegativity over which they are valid. In particular, it is my opinion that they cannot be relied upon when the amount of charge transferred from one atom to another is of the order of magnitude of an electronic charge. I do not think that you can properly conclude that the equations provide a criterion of pure ionic bonds. Indeed, I do not think that the concept of a pure ionic bond is a significant one, except as an idealization.
If there is some point about this that you are not clear about, please let me know.
With best wishes for the New Year, I am
- Letter from LP to Verna M. Shmavonian, Northwest College Lectures and Concerts Association, RE: Regrets that he will not be able to give a lecture tour around the Northwest campuses for some years because he recently did a tour of the northwest for the American Chemical Society and due to an overwhelming amount of requests for lectures he must limit what he can do. [Letter from Shmavonian to LP January 3, 1957] [Filed under LP Correspondence: (S: Correspondence, 1957), #380.1]
- Letter from Lore Henlein, Secretary, Archives of Biochemistry & Biophysics, to LP RE: Inquires if he is interested in reviewing "Synthetic Polypeptides: Preparations, Structure, and Properties" by C.H. Bamford et al. Handwritten note in right margin: "yes 1/16/57." [Letter from Henlein to LP January 21, 1957] [Filed under LP Manuscripts of Articles: 1957a.2]
- Letter from Mrs. Ileen E. Stewart, Editor, American Institute of Biological Sciences, to LP RE: Requests that LP send in soon a revised copy of his manuscript for a symposium by the Institute. Notifies LP that the Institute's Executive Director will be in LA and hopes to stop by Caltech. [Letter from LP to Stewart January 15, 1957, Letter from Stewart to LP February 4, 1957] [Filed under LP Correspondence: (American Institute of Biological Sciences, 1956-1958, 1962), #10.3]
- Letter from Neil Campbell to LP RE: Requests information on nucleic acids and their relation to heredity. [Letter from LP to Campbell January 17, 1957] [Filed under LP Correspondence: (C: Correspondence, 1957), #74.25]
- Memo from LP to Charles Newton RE: "So far as I know, we do not have any titanium dichloride in the chemistry laboratories." [Filed under LP Correspondence: (N: Correspondence, 1957), #288.1]