Manuscripts
On the Colorado near Mile 23. Leaning over is Sam Stone, then Frank E. Frost, Robert L. Gates and San Juan Jack. Second trip of Frost Expeditions on the San Juan River
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Punts and crew of the second San Juan trip of the Frost Expeditions in 1947
Manuscripts
mssMarston papers V184/0064

Riding the San Juan below Zahn's Camp. Frost Expedition: John A. Frost, Frank E. Frost and Britton Coll
Manuscripts
mssMarston papers V180/0115

The Frost punts; San Juan River at Mexican Hat. Skipper Frost faces the camera and Robert L. Gates has back to the camera. Second trip of the season
Manuscripts
mssMarston papers V180/0102

Paul B. English; Skipper Frost; Kenneth Willison. San Juan trip with Frost Expeditions. Early in July
Manuscripts
mssMarston papers V125/0147
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Frost Expeditions, second (John A. Frost; Frank E. Frost; Robert L. Gates; Claude Lortz; Samuel Stone)
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
