Manuscripts
Bert Loper. Glen Canyon
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Bert Loper. Glen Canyon during the San Juan Survey by the USGS
Manuscripts
mssMarston papers V160/0103
Bert Loper in Glen Canyon as a crewman with Dave Rust's party. Bert visited the steps at El Vado on this trip
Manuscripts
mssMarston papers V160/0104
Bert Loper at left and kelly W. Trimble at right. Bert was in his prime as head boatman of the USGS San Juan Survey. Glen Canyon
Manuscripts
mssMarston papers V160/0100
