The Jane Coffin Childs Memorial Fund for Medical Research

333 Cedar Street - New Haven 11 - Connecticut

March 25, 1949

Dr. Joshua Lederberg

Assistant Professor of Genetics

The University of Wisconsin College of Agriculture
Madison 6, Wisconsin

Dear Doctor Lederberg:

I want to thank you for sending us the copy we requested
of the following article, which acknowledges aid from this Fund:

Lederberg, J,
Problems in micrebial genetics.
Heredity, 1948, 2, 145-198.

We are pleased to have this copy to make our set of
twenty-five complete.

Sincerely yours,

A Gjatsth 9 Prats

Elizabeth M, Mester
Secretary