Manuscripts
One of the Mexican Hat Expedition sadirons in Horn Creek. Bright Angel gauge: July 19: 19,700 cfs. July 20: 18,500 cfs. July 21: 17,400 crfs
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Horn Creek Rapid. Bright Angel gauge: July 19: 19,700 cfs. July 20: 18,500 cfs. July 21: 17,400 cfs
Manuscripts
mssMarston papers P005/0230

John Harper in the sadiron "Mexican Hat III." Top of Horn Creek Rapid. Bright Angel gauge: 8,750 cfs
Manuscripts
mssMarston papers V066/0072

One of the Mexican Hat Expedition sadirons in Horn Creek Rapid
Manuscripts
mssMarston papers V066/0064

Frank Wright in Monument Creek Rapid. Bright Angel gauge: July 18: 21,000. July 19: 19,700. July 20: 18,500. July 21: 17,400
Manuscripts
mssMarston papers P005/0234
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Mexican Hat Expeditions - Sadiron Skiff Operation
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

The three sadirons of the Mexican Hat Expeditions. At the suspension bridge, Bright Angel Creek
Manuscripts
mssMarston papers V064/0064