MERCK & CO., INE.

RAHWAY, NEW YVERSEY

RESEARCH & DEVELOPMENT DIVISION

December 18, 1951

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

Dear Doctor Lederberg:

Thanks very much for the opportunity of making
your acquaintance. I found our conversation very helpful
and enlightening, and hope that I may be able to follow up
some of your suggestions.

Our best wishes for the Holiday Season and for

the coming New Yeare

Sincerely yours,

Kat Fethus

Karl Folkers, Associate Director
Research and Development