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Author/Creator
- Billingsley, George H.12
- Geological Survey (U.S.)11
- Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona7
- United States. Bureau of Indian Affairs7
- Wenrich, Karen J.6
- Van Gosen, B. S. (Bradley S.), 1960-4
- Huntoon, Peter W.2
- American Geophysical Union1
- Elston, Donald Parker, 1926-1
- International Geological Congress 1989 : Washington, D.C.)1
- United States. Bureau of Land Management1
- United States. National Park Service1
- Workman, Jeremiah B.1
- Young, Richard A. (Richard Andrew), 1940-1