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Michael O'Shea as Jack London |
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Susan Hayward as Charmian Kittredge |
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Osa Massen as Freda Maloof |
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Harry Davenport as Prof. Hilliard |
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Frank Craven as Old Tom |
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Virginia Mayo as Mamie |
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Ralph Morgan as George Brett |
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Jonathan Hale as Kerwin Maxwell |
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Edward Earle as James Hare |
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Morgan Conway as Richard Harding Davis |
| Directing | Alfred Santell | Director |
| Crew | Evelyn Finley | Stunts |
| Writing | Ernest Pascal | Screenplay |
| Writing | Charmian London | Book |
| Writing | Isaac Don Levine | Adaptation |
| Production | Samuel Bronston | Producer |
| Sound | Freddie Rich | Original Music Composer |
| Camera | John W. Boyle | Director of Photography |
| Editing | William H. Ziegler | Editor |
| Art | Bernard Herzbrun | Art Direction |
| Art | Earl Wooden | Set Decoration |
| Directing | Sam Nelson | Assistant Director |
