CARNEGIE INSTITUTION OF WASHINGTON DEPARTMENT OF EMBRYOLOGY WOLFE AND MADISON STREETS BALTIMORE 5, MARYLAND January 11, 1960 Dr. Joshua Lederberg Department of Genetics Stanford University School of Medicine Stanford, California Dear Josh: Among the men advanced as possible candidates for the Directorship of the Institution's Department of Genetics, two names occur again and again: Yanofsky and Zinder. No one is as well qualified as you are to compare these men. I Know such comparisons are difficult - but may I have your evaluation of the scientific and personal attributes of these men in relation to the position? Yours sincerely, . swagh’ ser JDE:mp