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- Geological Survey (U.S.)✖[remove]985
- United States. Bureau of Mines92
- Cobb, Edward Huntington, 1916-24
- United States. Bureau of Land Management20
- Diggles, M. F.16
- Bullock, John H.13
- Pilcher, Steven H.13
- United States. Congress. Senate. Committee on Interior and Insular Affairs13
- Soulliere, Sandra J.12
- Keith, William J., 1933-9
- Toth, Margo I.9
- United States. Forest Service9
- Evans, James George, 1938-8
- Van Loenen, Richard E.8
- Bartsch-Winkler, S.7
- Church, S. E.7
- Hudson, Travis, 1946-7
- Nash, J. Thomas (John Thomas), 1941-7
- Nowlan, G. A.7
- Orris, G. J.7