96 Avenue C
New York S$, New York
March 27, 1950

Professor Joshua Lederberg
Department of Genetics
University of Wisconsin
Madison 6, Wisconsin

Dear Dr. Lederberg:

I wish to acknowledge receipt of the two streins:
of E. coli and the set of publications that yéu sent,
I intend to start the crosses shortly. I expressly
wish to thank you for the papers and the outline of
references, which wili eliminate much of the time
that I had anticipated spending in library research.

I also received, with pleasure, your letter con-
tabning the formal notification of my avpointment.
I assume that no further formal seceptance on my
part is necessary.

I am eagerly awaiting the time when I may person-
ally thank you for the kindness and consideration that
you have shown me.

Sincerely,

Gen Qa. BrsQ