May 22, 1964

Mr. Dwayne Orton

Editer, THINK

International Business Machines Corporation
590 Madison Avenue

New York 22, New York

Dear Mr. Orton: ~

Thank you for your letter of May 20 and the enclosed issues of
THINK. It was a pleasure to work with Mr. Pfeiffer on this article.

Would it be possible for you to send me an additional six copies?

Sincerely yours,

Joshua Lederberg
Professor of Genetics