THE ROCKEFELLER UNIVERSITY 1230 YORK AVENUE NEW YORK, NY 10021 May 9, 1986 JOSHUA LEDERBERG PRESIDENT Dr. Steven Cooper Department of Microbiology and Immunology The University of Michigan Medical School 6643 Medical Science Building II Ann Arbor, Michigan 48109 Dear Dr. Cooper: You do keep sending me unsolicited manuscripts with which I fear I just have no way to cope. You will have to put them in the hands of reviewers who work closely within your own speciality and can provide their own au- thentic criticism for that purpose. Please let me know if you would like me to return the papers you have sent or if you would like me to forward them to some else. With all best wishes. a Yours sincerely, hua Lederberg