"It was made apparent to me that Military Intelligence considers practically all members of the Federation of Atomic Scientists 'potentially subversive,' if not actually so. Membership in the ICCASP, especially the worst section -- the Hollywood section -- is a definite indication of being a Communist or fellow traveller -- 'or both.' It was also equally obvious that Military Intelligence is of the opinion that pretty nearly all scientists would bear constant watching."
David B. Tyler. Letter to Linus Pauling. August 18, 1947.

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