Manuscripts
West from near the BM [benchmark?] at north end of Powell Plateau
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North from Havasupai Point across Serpentine to Powell Plateau
Manuscripts
mssMarston papers V070/0092
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Powell 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
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Moran, Thomas - From Powell 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
End of Powell Plateau. Formations resemble Middle Granite Gorge where the Kolb brothers were on this date
Manuscripts
mssMarston papers V074/0089
Down from Rapid 293; about Mile 119 at end of bend around Powell Plateau
Manuscripts
mssMarston papers V073/0195
