• 2 Discovery and exploration
• 2 Geographical Surveys West of the 100th Meridian (U.S.)
• 1 Indians of North America
• 1 Mohave Indians

• 2 Geographical Surveys West of the 100th Meridian (U.S.)
• 2 United States. War Department. Corps of Engineers
• 2 Wheeler, George M. (George Montague), 1842-1905
• 1 Bell, William, 1830-1910
• 1 O'Sullivan, Timothy H., 1840-1882

• 2 English

• 2 Grand Canyon (Ariz.)
• 2 United States
• 1 California
• 1 Nevada
• 1 Utah

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