Manuscripts
Harry Aleson standing on rubble below drainage off cliff at back of point of dredge assembly
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Harry Aleson standing on rocks back of site of dredge assembly, Mile 122.8
Manuscripts
mssMarston papers V023/0044
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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's combination of three 10-man inflated boats landing at the lower end of the bar where the dredge was assembled
Manuscripts
mssMarston papers V023/0072
