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Author
- Dibblee, T. W. (Thomas Wilson), 1911-2004.378
- Geological Survey (U.S.)61
- United States. Army Map Service, cartographer, issuing body.58
- Ontario Geological Survey.37
- Indiana Geological Survey32
- Geological Survey of Canada.31
- United States. Army Map Service.27
- Louisiana Geological Survey.19
- Feltis, R. D. (Richard D.), 1930-17
- Golden, Nadine E.17
- Pacific Coastal and Marine Science Center17
- California Geological Survey16
- Ontario. Department of Mines.14
- California. Department of Conservation13
- Jennings, Charles W. (Charles William), 1927-13
- Johnson, Samuel Y.13
- Koteff, Carl, cartographer.13
- Australia. Bureau of Mineral Resources, Geology and Geophysics.12
- Hildreth, C. T., cartographer.12
- Barnes, Virgil E. (Virgil Everett), 1903-1998.11