Manuscripts
The San Juan Group the morning we started for Lees Ferry. USGS survey of the San Juan River. Christensen; Hyde; Blake; Loper; Trimble
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The San Juan group the morning we started for Lees Ferry. USGS San Juan survey. Robert Allen; Hugh Hyde; Elwyn Blake; Bert Loper; Kelly Trimble
Manuscripts
mssMarston papers V183/0095

Killing fish with sticks. Mud flood. Honaker. Left to right: Blake; Hyde; Loper; Christensen; Trimble
Manuscripts
mssMarston papers V125/0051

Camp below Mendenhall Loop where flood drove us out. Loper with bedding. Left to right: Loper; Hyde; Trimble; Christensen; Blake; Miser
Manuscripts
mssMarston papers V125/0049

Camp below Mendenhall Loop where flood drove us out. Loper eating. Left to right: Christensen, Allen or Trimble, Miser, Hyde, Loper, Blake
Manuscripts
mssMarston papers V125/0048

Heber Christensen, cook and boatman with the USGS San Juan River survey in 1921
Manuscripts
mssMarston papers V154/0068

Bert Loper. Glen Canyon during the San Juan Survey by the USGS
Manuscripts
mssMarston papers V160/0103