Manuscripts
Harry Aleson's combination of three 10-man inflated boats landing at the lower end of the bar where the dredge was assembled
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Aleson's rig landing at lower end of bar where dredge was assembled
Manuscripts
mssMarston papers P007/0203

Harry Aleson standing on rocks back of site of dredge assembly, Mile 122.8
Manuscripts
mssMarston papers V023/0044

Harry Aleson standing on rubble below drainage off cliff at back of point of dredge assembly
Manuscripts
mssMarston papers V023/0043
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Hoskaninni Dredge: comment by Harry Aleson
Manuscripts
Professional and personal papers of Otis R. Marston and his collection of the materials on the history of Colorado River and Green River regions.
mssMarston papers

Harry Aleson in Narrow Canyon or lower end of Cataract Canyon. The boat is the outboard powered "Up Lake."
Manuscripts
mssMarston papers V173/0069
