Manuscripts
The "Cactus" (?) in Hance Rapid. Pr. Bright Angel gauge: 123,800 cfs
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The "Rattlesnake" in Hance Rapid. Prel. Bright Angel gauge: 123,800 cfs
Manuscripts
mssMarston papers P006/0097

Garth Marston running Hance Rapid. Bright Angel gauge: 27,200 cfs
Manuscripts
mssMarston papers P004/0163

The "Rattlesnake" in Unkar Rapid. Prel. Bright Angel gauge: 123,800 cfs
Manuscripts
mssMarston papers P006/0098

Dock Marston putting the "Joan" thru Hance Rapid. Bright Angel gauge: 27,200 cfs
Manuscripts
mssMarston papers P004/0164

Garth Marston holds the "Sandra" at the foot of Hance Rapid. Bright Angel gauge: 27,200 cfs
Manuscripts
mssMarston papers P004/0165

The "Cactus" in Mile 217 Rapid. Buzz Belknap at the controls. Preliminary Bright Angel gauge: 40,000 cfs
Manuscripts
mssMarston papers V091/0077