not reproduce without permission.
Oppenheimer a Communist?"
to Oppenheimer, July 23, 1964, Robert Oppenheimer papers, Library
of Congress Preparing his memoirs for publication, Haakon Chevalier
notifies Oppenheimer that he plans to reveal that both were members
of the same secret underground unit of the Communist Partyıs professional
section from 1938 to 1942.