First through the Grand Canyon /

Bibliographic Details
Main Author:	Powell, John Wesley, 1834-1902
Other Authors:	Kephart, Horace, 1862-1931
Format:	Book
Language:	English
Published:	New York : Macmillan, 1928
Subjects:	Colorado River (Colo.-Mexico) Grand Canyon (Ariz.) United States > Discovery and exploration.

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