HAHNEMANN MEDICAL COLLEGE AND HOSPITAL 235 North Fifteenth Street Philadelphia 2, Pennsylvania April 17, 1962 Dr. Joshua Lederberg Professor of Genetics Stanford University Medical Center Palo Alto, California Dear Josh? A project site visit from the National Institute of Health, in connection with enclosed copy of an application to support outlined research, is scheduled for April 25th. Enclosure is intended for your inform- ation and record. I am trying to get as many members of the advisory committee and consultants to join me and project site visitors for a luncheon during which variable opinions will be exchanged. I just learned about your trip to Japan, and regret that there will not be any chance for me to have the benefit of your advice just before or during project site visit. I do know, however, that you will be asked an opinion about my project and since it all stemmed from your ideas, I hope that my own elaborations have not introduced any seriously undes-— irable deviations from the genetic concept of the problems under investigation. Needless to say, I shall be eagerly awaiting your pertinent comments. With best personal regards. Cordially yours, De Irena Koprowska, M. D, IKsej Ene. _- ot cmd