CARNEGIE INSTITUTION OF WASHINGTON

DEPARTMENT OF GENETICS

COLD SPRING HARBOR, LONG ISLAND, N. Y.

June 14, 1950

Dr. Joshua Lederberg
Department of Genetics
University of Wisconsin
Madison, Wisconsin

Dear Joshua:

Many thanks for sending the
stocks. They give perfect results,
and I am delighted with them. will
we be seeing you at all this summer?

With best regards,

Sincerely,

Evelyn M. Witkin