Manuscripts
The LaRue-Richardson party at the dam site at the foot of Horseshoe Canyon
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Horseshoe Canyon above dam site, 70 miles below Green River, Wyoming
Manuscripts
mssMarston papers V106/0041

The party organized by LaRue to look for dam sites in Glen Canyon as they landed at the mouth of the side canyon at Mile 71.3
Manuscripts
mssMarston papers V031/0166
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Dunham - Horseshoe Canyon Dam
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
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Gneiss Canyon Rapid, foot; Bridge Canyon Dam site, mapped - Mile 236-237
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

Green River Investigation- Plane table party just below turn in Horseshoe Canyon
Manuscripts
mssMarston papers V106/0053.03
