Jelaskan Catatan dari Irving Pichel

Buhle, Paul and Dave Wagner (2002). A Very Dangerous Citizen: Abraham Lincoln Polonsky and the Hollywood Left. University of California Press. .

McBride, Joseph (2003). Searching for John Ford: A Life. Macmillan. .

Pells, Richard H. (1989). The Liberal Mind in a Conservative Age: American Intellectuals in the 1940s and 1950s. Wesleyan University Press. .