Manuscripts
Ellsworth Kolb in USGS skiff in the Brown Betty Rapid, No. 1. The Brown Betty Rapid heads at Mile 212.3 and drops 4 ft. in .15 miles
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Down Cataract Canyon from above head of The Brown Betty Rapid at the left bank. The Brown Betty Rapid heads at Mile 212.30 and drops 4 ft. in .15 miles
Manuscripts
mssMarston papers V007/0185
Ellsworth Kolb in U. S. Geological Survey skiff in Rapid #3. Rapid #3 heads at Mile 211.65 and drops 4' in .15 miles
Manuscripts
mssMarston papers V008/0034
Rapid No. 1 in Cataract Canyon. The head of Rapid No. 1 is at Mile 212.30 and the drop is 4 ft. in .15 miles
Manuscripts
mssMarston papers V007/0189
Head of Rapid 23 at Mile 202.20. Rapid 23 heads at Mile 202.20 and drops 8 ft. in .15 miles
Manuscripts
mssMarston papers V012/0215
