STATE UNIVERSITY OF NEW YORK AT NEW YORK CITY COLLEGE OF MEDICINE DEPARTMENT OF MEDICINE 451 CLARKSON AVENUE BROOKLYN 3, N. Y. January 9, 1953 Dr. Joshua Lederberg Department of Genetics University of Wisconsin Madison 6, Wisconsin Dear Dr, Lederberg: Thank you for sending me the collection of reprints from your department. I have read several of these contributions already and am very happy to have re- prints of them, With kind regards, Sincerely yours, RAs sm Robert Austrian, M.D.