UNIVERSITY OF CALIFORNIA, SAN DIEGO LA JOLLA, CALIFORNIA SCHOOL OF SCIENCE AND ENGINEERING July 19, 1961 Professor Joshua Lederberg Department of Genetics Medical Center Stanford University Palo Alto, California Dear Professor Lederberg: I do not think that I will be able to attend the informal conference on the existence and detection of extraterrestrial life. I did not plan to attend the Moscow meeting of the International Union of Biochemistry, and it would require a special trip to attend the informal conference. In addition to the problem of finding travel money at this time, work would stop in my laboratory while I was away. For these reasons, I regret that I shall have to decline the invitation to attend this conference, unless you still feel that I should attend. Very sincerely yours, Lake we Ly the Stanley L. Miller P.S. I have not yet had a chance to look carefully into the problem of the hygrometer, but I shall do so shortly. 5.L.M. YA 27 TS 'y