Manuscripts
Flattum and Wetherill Glen Canyon trip. Two boats and John Wetherill
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Flattum-Wetherill trip
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

Pat Flattum and the Indian motor used in outboard trip in Glen Canyon
Manuscripts
mssMarston papers V033/0052

John Wetherill and the overloaded outboard skiff in Glen Canyon
Manuscripts
mssMarston papers V173/0056

John Wetherill and the outboard boat in Glen Canyon of the Colorado River
Manuscripts
mssMarston papers V033/0062

Patrick Flattum. The name Henry also appears in some comment. Flattum and John Wetherill made a trip up into Glen Canyon from Lees Ferry in 1931, Jan
Manuscripts
mssMarston papers V156/0027

Wetherill-Flattum inscription, Glen Canyon, 7 miles above Lees Ferry
Manuscripts
mssMarston papers V036/0138