Manuscripts
Will R. Chenowith, Chief of the U. S. Geological Survey party which surveyed Cataract Canyon in 1921. His party also surveyed the canyon of the Escalante River and camped at the Gregory Bridge
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Camp of the U. S. Geological Survey party opposite mouth of Escalante River
Manuscripts
mssMarston papers V025/0193

Norm Nevills measuring the Gregory Bridge in the side canyon of Escalante Canyon
Manuscripts
mssMarston papers V025/0071



