Gouket ELLER Uy Ve nnn my OD (UL 2 198? * Or, os S/CE OF THe PRESS 1311 WN. Kenter Ave. Los Angeles, Ca. 9009 June 28, 1961 Dr. Joshua Lederberg The Rookefeller University 1230 York Avenue New York, N. ¥. 10021 Dear Dr. Lederberg: IT am enclosing a copy of my recent paper and photocopies of the correspondence between Beadle and Tatum on file at Cal Tech. I hope you enjoy reading the paper and would appreciate your comments and suggestions. Many of the ideas we dis- eussed in our interview were valuable to me in writing the paper. I will be travelling in Europe until mid August, but I would welcome the opportunity to meet with you again if | you are in Palo Alto during late August or September. Thank you. Sincerely, aak Folie Mark Herbst