202 Vanderbilt Hall
Harvard Medical School
Boston 15, Massachusetts
January 7, 1961

Dr. Joshua Lederberg

Department of Genetics

Stanford University Medical Center
Palo Alto, California

Dear Dr. lederberg:

Thank you for your letter, and I appreciate your offer. I
apologize for my delay in answering--I finally had a chance during
Christmas vacation to consider my plans for the summer.

I am afraid that time limitations make it necessary for me to
decide against working in your laboratory this summer. I must take
the National Board Exams late in June, and I couldn't possibly do
research for more than a two month period this summer. In view of
the nature of your offer, and in full agreement with your point of
view, I have decided to try to make other plans.

I do want to assure you of my interest in the field of "immunological
physiology" and the problem of humoral and cellular defense mechanisms, ass
and I hope that in the future I will have the opportunity to do
research in this field for a longer period of time, possibly ina

ot

postdoctoral position. .
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Again, thank you for your generous offer. 6

bea

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Sincerely yours, 2

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