Manuscripts
Igneous cone east side of Yumtheska Point
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Yumtheska Point
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
West across Havasu Canyon and Beaver Creek to Yumtheska Point and the small cone at its base
Manuscripts
mssMarston papers V079/0091
Down from Mile 147. Mt. Sinyala upper center and the small cone under Yumtheska Point is upper right
Manuscripts
mssMarston papers V078/0170
