Manuscripts
Ellsworth Kolb, boatman for the U. S. Geological Survey party, Rapid #8
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Ellsworth Kolb running U. S. Geological Survey skiff in Rapid #5
Manuscripts
mssMarston papers V008/0082
Ellsworth Kolb in boat below Rapid #4, Cataract Canyon. U. S. Geological Survey under W. R. Chenowith
Manuscripts
mssMarston papers V008/0057
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
