Manuscripts
Inflated units used by Ed Herrman, Howard Booth, and Jorgen Visbak to transit the Grand Canyon April-May, 1974. Visbak places this at Mile 15 but is undertain. It appears more like the left wall at Houserock Rapid
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Small inflated unit in Vulcan Rapid; Ed Herrman, Howard Booth and Jorgen Visbak
Manuscripts
mssMarston papers V087/0040

Run of Sockdologer Rapid in small inflated craft. Ed Herrman; Howard Booth; Jorgen Visbak
Manuscripts
mssMarston papers V060/0154

A small inflated unit near Salt Creek. Ed Herrman; Howard Booth; Jorgen Visbak
Manuscripts
mssMarston papers V066/0106

Run of Monument Creek Rapid in one of the inflated units- Ed Herrman, Howard Booth and Jorgen Visbak
Manuscripts
mssMarston papers V067/0121
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Visbak, Jorgen
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
