W. H. FREEMAN AND COMPANY fll PUBLISHERS 549 MARKET STREET, SAN FRANCISCO 5, CALIFORNIA + TELEPHONE: YUKON 6-5115 April 30, 1954 Dr. Joshua Lederberg Department of Genetics University of Wisconsin Madison 7, Wisconsin Dear Dr. Lederberg: Thank you very much for sending us your review of Endosymbiose der Tiere mit pflanzlichen Mikroorganismen, with your note about Professor Stéinhaus. Mr. Freeman is at present away from the office on a trip through the Northwest, but your suggestion will be brought to his atten- tion just as soon as he returns, which will be in about a week. Sincerely yours, Mangere Coope Secretary to Mr. Freeman me /