Author
Geological Survey (U.S.)
124
California. Division of Mines and Geology
16
Geological Society of America
14
Langenheim, Victoria E.
13
Bankey, Viki
10
Decade of North American Geology Project
10
Jachens, Robert C.
10
United States. Defense Mapping Agency
9
Folger, David W.
8
Minnesota Geological Survey
8
Kucks, R. P.
6
Morin, Robert L.
6
Abrams, Gerda
5
Ervin, C. Patrick
5
Kinoshita, W. T.
5
Kleinkopf, M. Dean 1926-2015
5
Mabey, Don R., 1927-2015
5
Oliver, Howard W.
5
Aeronautical Chart and Information Center (U.S.)
4
Behrendt, John C., 1932-
4
Chandler, Val W.
4
Colorado Geological Survey
4
Davis, W. E. 1905-
4
Healey, D. L.
4
Hildenbrand, T. G.
4
Keen, C. E.
4
McCafferty, Anne
4
Minnesota. Legislature. Legislative Commission on Minnesota Resources
4
Oregon. Department of Geology and Mineral Industries
4
Plouff, Donald
4
Ponce, David A.
4
Simpson, Robert W.
4
Speed, Robert C.
4
Wynn, Jeffrey C.
4
Bajwa, LaCretia Y.
3
Berg, Joseph W.
3
Biehler, Shawn
3
Chapman, Rodger H. 1925-
3
Childs, Jonathan R.
3
Colorado. Mining Industrial Development Board
3
Cook, Kenneth L.
3
Haworth, R. T.
3
Keller, G. Randy 1946-
3
McGinnis, Lyle D. 1931-2017
3
Robbins, Stephen L. 1927-
3
Robinson, G. D. 1918-
3
Schaefer, Donald H.
3
United States. Bureau of Land Management
3
Wagini, Alexander
3
Bishop, Charles C.
2
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