March 19, 1962

Mr. G.A. Derbyshire

Space Sclence Board

National Academy of Sclences
2101 Constitution Avenue
Washington 25, 0.C.

Dear George:

As you know, | will be unable to attend the forthcoming COSPAR
meeting in April as t will be on a lecture In Japan. {t is difficult
to see at the present time Just what will be going on at COSPAR In
the area of exoblology. However, In the event that any really signifi-
cant discussions appear to be forthcoming, might | suggest that my
colleague here, Dr. Ellfott C. Levinthal, be named as an alternate In
my place for the working group on experiments to participate In any
such discussions. Should the eventuality be imminent, { suggest that
you call Or, Levinthal here and he might be able to arrange to attend
on quite short notice. This does seem to be quite unlikely at the
present time, but as Levinthal Is in charge of much of our program
and will be familiar with the detalis of it, he could maxe valuable
contributlons.

Yours sincerely,

Joshua Lederberg
Professor of Genetics

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