Manuscripts
Ed Hudson, Harry Aleson, Hugh Brown, Fred Swenson. Separation Plaque. After failure of upriver attempt in 1944, Feb
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Ed Hudson, Harry Aleson, Hugh Brown and Fred Swenson at Separation Plaque after failure of Aleson's up-river attempt
Manuscripts
mssMarston papers V184/0015
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Harry Aleson, Return Moore, W. Ward Vickers, Fred Swenson, Hugh Brown, Ed Hudson - Up-River Attempt-Grand Canyon
Manuscripts
Professional and personal papers of Otis R. Marston and his collection of the materials on the history of Colorado River and Green River regions.
mssMarston papers
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Harry Aleson, Fred Swenson, John Schinbeck - Out Separation Canyon and Across Sanup Plateau
Manuscripts
Professional and personal papers of Otis R. Marston and his collection of the materials on the history of Colorado River and Green River regions.
mssMarston papers
