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Letter from D. P. Riley to Linus Pauling. December 9, 1952.
Riley writes to thank Pauling for the information that he provided on punched-card computers being used at Caltech. Riley also expresses his interest in attending the planned Caltech proteins conference and provides Pauling with an update on his laboratory's work on a variety of protein structures.


DPR/MB 9th December 1952.

Professor Linus Pauling, Sc.D., Gates and Crellin Laboratories of Chemistry, California Institute of Technology, Pasadena 4, California, U.S.A.

Dear Pauling,

Thank you very much indeed for the useful information about punched cards and the Sherman-Cross strips. Now that I know exactly what is available, I am going in to the question of practicable computing procedures over here. We are less blessed with the latest I.B.M. machines than you. There is just a possibility of using an electronic digital computer and I am exploring this avenue first. So that, for the moment, I do not have to trouble you further with regard to the punched cards but I will certainly write again if it seems that I need them.

By the way, might I have reprints of your papers with Shaffer and Schomaker in J.Chem. Phys. 1946, 14, 648 and 659, if any are still available?

I am very glad to learn that you have now fixed a date for the Protein Conference. This ought to be a great success and I am eagerly looking forward to it. I shall certainly be able to come to it, but whether I shall be able to stay on afterwards will rather depend on developments here. The whole future of this Laboratory is now under discussion, including my place in it, and I shall have to await the results of these deliberations before

Professor Linus Pauling. -2- 9th December 1952.

knowing whether I can take up your very kind offer. Would it be possible for me to delay a decision about it until the Spring?

We have gone no further with the γ-helix or the 3-chain collagen model, except to satisfy ourselves that a large proportion of proline residues is incompatible with the former.

It is as well to have an independent check of our serum albumin curve. We are now working with increased resolution and intensity and have confirmed that poly - γ - methyl and poly -Y- benzyl glutamate have your α-helix structure.

With all best wishes,

yours sincerely,

D. P. Riley

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