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July 27, 1973

Dr. Dorothy T. Krieger

Department of Medicine

Mount Sinai School of Medicine

of the City University of New York
5th Avenue and 100th Street

New York, New York 10029

Dear Dr. Krieger,

You honor me by inviting me to give the Berson Memorial Lecture.
I did not know him personally and I am gratified to hear that he
knew of me in the way implied by your letter. Unfortunately, the forth-
coming year is one that I expect to be unusually difficult in the light
of accumulated commitments and I conclude that it would really be unwise
for me to accept your very gracious invitation despite all of the
sentimental motives that might lead me to accept. Perhaps some future
year might be more acconmodating to all of us.

I am glad that you did identify yourself, so that I could connect
you with the Dorothy I knew thirty years ago. I am glad that thread
of acquaintanceship has been restored. If it is not too much trouble,
I wonder if you would be able to send me a few of your writings or other
material that would let me know how you have been occupying yourself.
I am glad to see that you are in academic work and have a distinguished
position in it; not that I would have had any other expectations from
the time I did know you better.

Sincerely yours,
Joshua Lederberg

Professor of Genetics

JL/rr

Depcrre
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