University of Wisconsin CENTER FOR HEALTH SCIENCES School of Pharmacy 425 North Charter Street Madison, Wisconsin 53706 Telephone: 608/262-1416 17 February 1984 Dr. Joshua Lederberg Office of the President The Rockefeller University New York, New York 10021 Dear Dr. Lederberg: K Madison FEB 2k 333 “ Sct oF THe ESS Enclosed are copies of the two letters between Edward Tatum and his father. | hope they will be of some use to you. Although | did not look through the collections systematically for correspondences to or from his son, these are the only letters of any substance | found between the two [in the Arthur Tatum Papers at the University of Wisconsin Arcnives and at the State Historical Society of Wisconsin. Good luck with your research on E. L. Tatum. Sincerely yours, dst Sam John Swann