James Dalton Trumbo (December 9, 1905 – September 10, 1976) was an American screenwriter who scripted many award-winning films, including Roman Holiday (1953), Exodus and Spartacus (both 1960), and Thirty Seconds Over Tokyo (1944). One of the Hollywood Ten, he refused to testify before the House Un-American Activities Committee (HUAC) in 1947 during the committee's investigation of Communist influences in the motion picture industry. Wikipedia
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