May 20, 1936

Dr. Walter M. Boothby

Mayo Clinic

Rochester, Minnesota

Dear Dr. Boothby:

Dr. Charles D. Coryell has asked me to write to you in regard to his application for a position with you. Dr. Coryell has been very well trained in general and physical chemistry and has also a good knowledge of organic chemistry. His experience in biochemical work has been restricted to the last year. During this time, however, he has learned a good bit of biochemical technique in connection with his work on hemoglobin and he has become very much interested in biochemical problems in general, and especially in the application to them of modern physical chemical methods.

I consider Dr. Coryell to be a very able research man, I feel that he can be recommended for biochemical work much more strongly than the average able man whose interests have lain in the field of general and physical chemistry because of the fact that he works very hard and energetically and his interest in a new field is as easily developed. He tackled the investigations on hemoglobin which he has been carrying on with me with great enthusiasm and ingenuity, and I am sure that he would show the same traits in attacking other biochemical problems. I shall be very sorry indeed not to have Dr. Coryell continue this work during the coming; year; his decision not to accept re-appointment here is based on personal reasons.

Sincerely yours,

Linus Pauling

LP:ml