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JOSHUA LEDERBERG August 17, 1979

PRESIDENT

Dr. David Baltimore

Department of Biology

Room E17-517A

Massachusetts Institute of Technology
Cambridge, Massachusetts 02139

Dear David:

I was happy to hear from Igor Tamm that you will be able
to participate in the colloquium on October 5 commemorating the
100th birthday of Peyton Rous. This is to extend my own per-
sonal invitation not only to the colloquium but to an informal
luncheon that day.

I am enclosing a brief outline of the program for your
guidance. There will be no printed program, but it would be
helpful to have in advance a sentence or two from you summa-
rizing your presentation. I hope the October gathering will
recapture the same tone of informality, nostalgic warmth, and
spirited scientific exchange that marked the colloquium earlier
this year on the 35th anniversary of the publication of the DNA
paper by Avery, MacLeod, and McCarty. (I suspect you will
enjoy having a copy of the enclosed souvenir.)

A room has been reserved for you on campus for the nights
of October 4 and 5. I look forward to seeing you again.

Thank you for joining us.

Cordially,

Joshua Lederberg

cc: Hidesaburo Hanafusa
Purnell Choppin
Igor Tamm
Rodney W. Nichols

Enclosure - souvenir booklet