Manuscripts
Climbing route out of inner gorge just below the Tapeats as used by Ervin in 1931
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Pre-Cambrian just below the Tapeats on the 1931 climbing route used by Ervin
Manuscripts
mssMarston papers P007/0804

Middle part of climb route used by Ervin in 1931 to escape the inner gorge
Manuscripts
mssMarston papers P007/0803

Middle part of the climbing route used by Ervin in 1931 to escape the inner gorge above 234 Mile Rapid
Manuscripts
mssMarston papers V095/0056

The spring at the Tapeats formation which was found by Ervin in 1931 when he climbed from the inner gorge
Manuscripts
mssMarston papers V095/0031

The break in the Tapeats providing escape from the inner gorge at 234 Mile Rapid and probable route used by Ervin in 1931
Manuscripts
mssMarston papers V095/0052

Ravine above the spring found by Ervin after his climb from the inner gorge in 1931
Manuscripts
mssMarston papers V095/0027