Manuscripts
End of Gray Canyon. Named by Powell from the color of its walls
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From a half stereo: Camp No. 50 of the second Powell crew at Mile 11 1/4 in Gray Canyon. Stereo No. 98
Manuscripts
mssMarston papers V118/0141

Across Gray Canyon from mouth of Three Fords Canyon on the right bank
Manuscripts
mssMarston papers V118/0069



