Manuscripts
Dropping into the head of Mile 217 Rapid. Preliminary Bright Angel gauge: 90,500 cfs
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At the head of Mile 217 Rapid. Preliminary gauge at Bright Angel: 90,500 cfs
Manuscripts
mssMarston papers V091/0065

The "Rattlesnake" heading into Mile 217 Rapid. Approximate gauge: 90,500 cfs
Manuscripts
mssMarston papers V091/0067

The "Rattlesnake" heading into Mile 217 Rapid. Preliminary gauge at Bright Angel Creek: 40,000 cfs
Manuscripts
mssMarston papers V091/0079

The "Cactus" (?) moving into the head of Mile 217 Rapid. Approximate gauge: 90,500 cfs
Manuscripts
mssMarston papers V091/0074

The "Rattlesnake" in Mile 217 Rapid. Approximate gauge: 90,500 cfs
Manuscripts
mssMarston papers V091/0068

Pulling out at the foot of Mile 217 Rapid. Bill Sanderson is pilot. Approximate Bright Angel gauge: 90,500 cfs
Manuscripts
mssMarston papers V091/0070