Manuscripts
Mile 66 1/2, Grand Canyon
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Down Grand Canyon from Mile 87 1/2 showing the mouth of Bright Angel Creek
Manuscripts
mssMarston papers P008/0107
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Cathedral Canyon (LB, Mile 66.15); Driftwood Canyon (RB, Mile 66.4) - Mile 66-67
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
