Herb Fagen The encyclopedia of westerns New York, 2003 p. 84 |
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Tom Weaver, Biography by Gregory William Mank John Carradine: The Films Jefferson, NC, 1999 |
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William Darby John Ford's Westerns, A Thematic Analysis, with a Filmography Jefferson, NC, 1996 |
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Tag Gallagher John Ford: The Man and His Films Berkeley-Los Angeles-London, 1986 |
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Christian Unucka Richard Widmark und seine Filme, Ein filmographischer Bildband Hebertshausen, 1984 |
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J.A. Place The Western Films of John Ford Secaucus, N.J., 1974 |
Robert Beck The Edward G. Robinson Encyclopedia Jefferson, North Carolina, and London, 2002 |