AMERICAN PHILOSOPHICAL SOCIETY Wy
held at Philadelphia

for Promoting Useful Knowledge

104 South Fifth Street
Philadelphia, Pa. 19106

November 18, 1975

Dr. Joshua Lederberg
Department of Genetics
School of Medicine

Stanford University

Palo Alto, California 94305

Dear Dr. Lederberg:

I believe there is no one in our Society who knew
the life and work of our late and greatly lamented member
Edward Tatum better than you. I hope very much that you
will write a biographical memoir of him for the YEAR BOOK.
As you know these articles do not run to more than 2,000
words. They do not require a photograph or a bibliography.
I should like to have the manuscript by late summer of 1976
in order to get it into the YEAR BOOK for that year.

Sincerely yours,

4. 4” 4 CG CaN NAL ha

George W. Corner
Executive Officer