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Brian Keith as William Dunn |
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Ben Johnson as George Bradley |
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John Beal as Maj. John Wesley Powell |
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James Drury as Walter Powell |
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R.G. Armstrong as Oramel Howland |
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L.Q. Jones as Billy Hawkins |
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Dan Sheridan as Jack Sumner |
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Stan Jones as Seneca Howland |
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David Frankham as Frank Goodman |
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Roy Barcroft as Jim Baker |
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Jack Big Head as Ashtishkel |
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Pat Hogan as Indian chief |
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Dawn Little Sky as Indian woman |
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David Stollery as Andrew 'Andy' Hall |
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Ray Walker as McSpadden (uncredited) |
| Directing | William Beaudine | Director |
| Writing | John Wesley Powell | Writer |
| Writing | Lawrence Edward Watkin | Writer |
| Sound | Oliver Wallace | Music |
| Camera | Gordon Avil | Director of Photography |
| Production | James Algar | Associate Producer |
| Production | Walt Disney | Producer |
