AUGG {884 DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE PUBLIC HEALTH SERVICE BETHESDA, MD. 20014 NATIONAL INSTITUTES OF HEALTH AREA CODE 30! TEL: 656-4000 August 4, 1964 Dr. Joshua Lederberg Professor of Genetics Stanford University Medical Center Palo Alto, California 94304 Dear Josh: Here at long last is a corrected copy of the lecture at Stanford -- I hate to think how many months ago. I send it to you in the hope that you haven't entirely abandoned your interest in some collaborative paper. I certainly have not. There are perhaps fifty references which should be cited and which I will complete and send you when I return to Bethesda from Puerto Rico where I'm doing some studies on the development of the cerebral circulation in the fetal monkey. Best wishes, a J te Cu feN DLA. Covmd a S. Kety, M.D. Enclosure