Manuscripts
Gass Monument, right bank (Mile 263.9) - Mile 263-264
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Gass Monument, left bank (Mile 260.3) - Mile 260-261
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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Helldiver Rapid - Mile 264-265
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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Whirlwind Draw, right bank (Mile 62.7) - Mile 62-63
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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California Bar, left bank; Sundog Bar, right bank - Mile 131-132
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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Gass, Patrick
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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Horsethief Canyon; Horsethief Trail, right bank - Mile 44-45
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