Manuscripts
"Boo Too" in Unkar Rapid. Prel. Bright Angel gauge: June 13: 123,800 cfs
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The "Rattlesnake" in Unkar Rapid. Prel. Bright Angel gauge: 123,800 cfs
Manuscripts
mssMarston papers P006/0098

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

Capsized "Boo Too" at lower end of Vulcan. Preliminary Bright Angel gauge: June 19: 107,000. June 20: 100,000
Manuscripts
mssMarston papers P006/0150

The "Cactus" (?) in Hance Rapid. Pr. Bright Angel gauge: 123,800 cfs
Manuscripts
mssMarston papers P006/0099

"Boo Too" drifting into Vulcan. Preliminary gauge: June 19: 107,000. June 20: 100,000
Manuscripts
mssMarston papers P006/0148
