DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE PUBLIC HEALTH SERVICE . BETHESDA 14, MD, NATIONAL INSTITUTES OF HEALTH May 26, 1960 Professor J. Lederberg Genetics Department Stanford University Palo Alto, California Dear Josh: I understand the kind of work load you mist be carrying, and I want you to postpone the study of my experimental proposal until you have time to think it through carefully. But in case you are just on the point of doing it, I wanted you to know that on about June 6 I shall have to finalize my plans for the next two years. If you can get a considered appraisal to me by then, it will be helpful. If that date is too close for comfort, just ignore this note, Sincerely yours, Eon. Gordon Allen