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Rin-Tin-Tin as Rin Tin Tin |
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John Harron as John Martin |
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June Marlowe as Mrs. John Martin |
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Gayne Whitman as Miguel Hernández |
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Heinie Conklin as Tony |
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Don Alvarado as Pedro |
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Mary Louise Miller as The Martin Baby |
| Directing | William C. McGann | Assistant Director |
| Writing | Paul Klein | Story |
| Writing | Ewart Adamson | Adaptation |
| Writing | Edward J. Meagher | Story |
| Directing | Herman C. Raymaker | Director |
| Directing | Al Zeidman | Assistant Director |
| Editing | Clarence Kolster | Editor |
| Camera | Edwin B. DuPar | Director of Photography |
