Manuscripts
Jack Wimpress, Walter Prevost and Don Wimpress just before the start down the San Juan River from Mexican Hat. The boat at the left is a 10-ft. rowboat and that at right is an 8-ft. pram
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Don Wimpress and the 8-ft. pram used to navigate the San Juan from Mexican Hat to its mouth and Glen Canyon down to Lees Ferry
Manuscripts
mssMarston papers V170/0201
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Don Wimpress; John K. Wimpress; Walter Prevost
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

Don Wimpress and the 8 foot pram with which he navigated the San Juan and lower Glen Canyon in 1952, May-June; Mexican Hat
Manuscripts
mssMarston papers V180/0126

The San Juan party which left Mexican Hat with the Mexican Hat Expedition on 1952, June 04. Posed outside Hidden Passage
Manuscripts
mssMarston papers V185/0031

