Manuscripts
Spring found by Ervin after climb from inner gorge in 1931
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Ravine above spring found by Ervin in 1931 after climb from inner gorge
Manuscripts
mssMarston papers P007/0792

Spring found by Ervin in 1931 after climb from inner gorge as it flows over the Tapeats formation
Manuscripts
mssMarston papers P007/0796

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

Ravine above spring found by Ervin in 1931 above in the inner gorge
Manuscripts
mssMarston papers P007/0797

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

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