Tom Weaver, Biography by Gregory William Mank John Carradine: The Films Jefferson, NC, 1999 |
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Lawrence J. Quirk The Films of Robert Taylor Secaucus, N.J., 1975 pp. 59-60 |
Larry Langman and Daniel Finn A Guide to American Crime Films of the Thirties Westport, Connecticut - London, 1995 |
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Larry Langman & David Ebner Encyclopedia of American Spy Films New York & London, 1990 |