Manuscripts
Riding air mattresses at 231.5- Grand Canyon
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John Harvey Butchart of Flagstaff in his air-mattress navigation of the Grand Canyon at Tanner Creek
Manuscripts
mssMarston papers V153/0117
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Grand Canyon: air services
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

Homer Morgan swimming on air mattress through Bridge Canyon Rapid
Manuscripts
mssMarston papers P007/0603


