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Author/Creator
- Geological Survey (U.S.)8
- Sargent, Kenneth A.4
- Hills, Francis Allan3
- Jenness, Jane E.3
- California. Division of Mines and Geology2
- Lopez, David A.2
- Grose, L. Trowbridge (Lucius Trowbridge), 1924-1
- Idaho. Department of Water Resources1
- Johnson, William D., Jr.1
- Nevada Bureau of Mines and Geology1
- New Mexico. Bureau of Mines and Mineral Resources1
- Roggensack, Kurt1
- Scarborough, Robert B.1
- University of Arizona. Bureau of Geology and Mineral Technology1
- Utah Geological and Mineral Survey1