August 12, 1955 Dr. Re Ceppellini Columbia University Institute for the Study of Human Variation New York 27, New York Dear Dr. Cappellini: Dr. Lederberg had written me that a creative get-tosether would be of mutual interest and we are looking forward very much to having you here for a daye The best time for this visit would be Monday, September 12th. Prior to that time we are fully booked up or out of town, A number of pertinent reprints are being mailed to you under separate cover. Would you please send me some of your own work on blood groups and biochemical traits, so that we will be well primed for one another Wien you arrive. With warm regards, Sincerely yours, T. 3S. Hauschka, Ph.D. TSH : ee c ec: Dr. Lederberg v~