December 27, 196]

Dr. Lioyd V. Berkner

Space Sclence Board

Natlone} Academy of Sclences
2101 Constitution Avenue
Washington, 0.C.

Dear Lioyd:

{ have your communication of | December and the attached meter!al
on the prospective future of the Board. { think your plan Is a constructive
one; | would hope that [t might be possible to twist Jim Van Allen's arm
to succeed you as Chairman.

With bestiwishes for the new year,

Yours sincerely,

Joshua Lederberg
Professor of Genetics