Anercan Asceidion of Nusaynen, Suc 835 SOUTHERN BUILDING, 15TH & H STREETS, N.W., WASHINGTON, D.C. 20005 «© 202/737-4060 OFFICERS WILLIAM FLEMER, III, President Pencetor Nurseries PO Ris 194 Princetor New sersey 8540 HAROLD R. NICKEL, Vice President & Treasurer Greenleaf Nu'sery Company Route 5 Boa 184 6 G Muskoxen Okiaroma 74401 STAFF ROBERT F. LEDERER Executive Vice President F. RAYMOND BRUSH Secretary PHILIP E. BACON Administrative Assistant RICHARD F TURNEY Administrative Assistant WAYNE H. DICKSON Director af Public Relations DIRECTORS Region | PALMER W. BIGELOW. JR Fagelow Nutsere. 1, 455 Wo Main Stet Rerthoct Massa qusetts boa! Region Il LOUIS HILLENMEYER. JR Hiieripeqer Nupseros fernetan Kerf ey 40404 Region III KENNETH J. ALTORFER Mi tay Nasery Company 254 fetersen Street Waterias Wesccusin hasga Region IV HAROLD So CRAWFORD we ay Cooma ay nie “Goa Shiibe Region V HAROLD R. NICKE! rat N Region VI JOSEPH Ho KEUPENGER At Large HOSKINS A SHADOW Te Valew Nasery be Denne, oe Allied Associate JOHN H. POWELL Leenaee babel sates Ca ba PO Bag sh Higbee Reach fieda oh] y& Seertniges |e Dr. Joshua Lederberg Genetics Department School of Medicine Stanford University Stanford, California 94305 Dear Dr. Lederberg: May 8, 1970 The possibility that many urban ills can be traced directly to a specific biological need, which typical urban surroundings arouse in the city dweller, is suggested by the authors of the enclosed re- print from Bulletin of the Atomic Scientists. According to the authors, the basic cause of maladjustment is man's deep-rooted longing for the type of surroundings in which his forebears lived, on the savanna, at the dawn of human history. Drs. Iltis and Loucks, and Mr. Andrews, conclude that man is "genetically programmed" to require the presence of warm, humid air, green plant life, and even the animal "companions" which were part of the scene on the high plains of Africa As horticulturists, the Nurserymen wish to determine from which man emerged. members of the American Association of the nature and extent of the role of green things in the psychological adaptation of man to his environ- ment. The contribution of the nursery industry to the improvement of urban conditions might be affected measurably by the substantia- tion of the I[ltis-—Loucks—Andrews thesis. Our immediate interest is to obtain an evaluation of the sound- ness of the conclusion stated in the article, "Criteria for an Opti- mum Human Environment," with particular reference to the need for research in depth to test the validity of the assumption on which the Iitis article was based. Your own established reputation in a field of science which re- lates to the subject in question would make any comment you might wish to volunteer most welcome to us. RFL: gb Enclosure Sincerely yours, —Prbos TL Deroe Robert F. Lederer Executive Vice President