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

Ellsworth Kolb, boatman for the U. S. Geological Survey party, Rapid #8
Manuscripts
mssMarston papers V008/0175

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

U. S. Geological Survey camp #2 between Rapids #4 and #5, Cataract Canyon
Manuscripts
mssMarston papers V008/0052

