554

Seed

February 20, 1961

Dr. Joel Orlen

Space Sclence Board

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

Dear Doctor Orlen:

This Is In reply to your letter of February 13.

1) t wrote to ferusalimsk! a few weeks ago, with copy to Dick
Porter. Please let ma know what comes up.

2) 1 em personally not too keen about this exchange visit, and
would not press it without better evidence of USSR receptivity. Might
we put this off till after COSPAR? | am already tentatively listed for
an exchange visit In October, Genetics and Metabol!sm' - Dr. Chris
Anfinsen at NIH Is In charge of these arrangements.

3) | wrote George that this looks 0.K.

4) Thinking.

Yours sincerely,

Joshua Lederberg
Professer of Genetics