Manuscripts
Bert Loper Grand Canyon expedition 1907, Fort at White Canyon
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Bert Loper at the time of his first traverse of the Grand Canyon
Manuscripts
mssMarston papers V160/0112
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Bert Loper
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
Loper inscription on back of the Fort below the mouth of White Canyon
Manuscripts
mssMarston papers V020/0066
