Manuscripts
Camp at Mile 43 now known as President Harding Rapid. USGS party
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Chopper leaving camp at Mile 43 LB above President Harding Rapid
Manuscripts
mssMarston papers V051/0041
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President Harding Rapid; Eminence Trail - Mile 43-44
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
