LonG IsLAND BIOLOGICAL ASSOCIATION COLD SPRING HARBOR, LONG ISLAND THE BIOLOGICAL LABORATORY July 11, 1951 Dr. Joshue Lederberg Department of Genetics The University of Wisconsin Madison 6, Wisconsin Dear Lederberg: Thank you for the figures and tables for your paper. If it isn't too much trouble to you, we would like to have prints of all the good snapshots you took during the symposium. Some of them may be included in the volume, and all would be put in the scrap book that the Laboratory has. With best regards, Sincerely yours, £ ( Yfgewrere € MO:af M. Demeree