May 14, 1951.

Dr. Thomas S. Hall,

Dean, College of Liberal Arts,
Washington University,

St. Louis 5, Missourt.

Dear Dr. Hall;

In accordance with your request of May 9, I am sending those
reprints that are available. I regret that many of the earlier papers
which you requested are virtually exhausted. If it would be of any
use to you, however, I would be pleased to send you reprints of any
of the papers on the attached list, if I could have them and the list
back when you had finished your immediate use of then,

Yours sincerely,

Joshua Lederberg,
Associate Professor of Genetics