| Original title | Boss of Lonely Vally |
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| Danish title | Den underjordiske gang |
| Leikstjórn | Ray Taylor |
| Screenplay | Frances Guihan |
| Based on | Roman af Forrest Brown. |
| Director of Photography | John Hickson, Allen Q. Thompson |
| Editor | Bernard Loftus |
| Production designer | Ralph Berger |
| Appearance | Buck Jones, Richard Holland, Muriel Evans |
| Land | USA |
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| Production company | Buck Jones Productions |
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Instruktion |
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| Instruktion | Ray Taylor |
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Manus |
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| Manus | Frances Guihan |
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Produktion |
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| Produktion | Buck Jones |
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Foto |
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| Foto | John Hickson |
| Foto | Allen Q. Thompson |
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Klip |
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| Klip | Bernard Loftus |
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Produktionsdesign |
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| Produktionsdesign | Ralph Berger |
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Medvirkende |
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| Medvirkende | Buck Jones |
| Medvirkende | Richard Holland |
| Medvirkende | Muriel Evans |
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