Geological Survey (U.S.) 13,797 Geological Survey (U.S.), 2,174 United States. Bureau of Land Management 1,323 United States. Central Intelligence Agency 1,195 United States. Forest Service, 599 United States. National Aeronautics and Space Administration 546 National Operations Center (U.S.) 481 U.S. Atomic Energy Commission 409 United States. Forest Service 396 United States. Bureau of Land Management, 326 National Science and Technology Center (U.S.) 303 National Operations Center (U.S.), 292 United States. National Park Service 246 Kentucky Geological Survey 236 U.S. Fish and Wildlife Service 205 Planetary Geology Program (U.S.) 198 United States. Bureau of Land Management. Montana State Office 194 Geometronics Service Center (U.S.) 190 United States. Defense Mapping Agency. Hydrographic/Topographic Center 182 United States. Natural Resources Conservation Service 182 Colorado Geological Survey 164 United States. National Park Service, 148 United States. Forest Service. Southern Region 129 Florida 121 Indiana. Department of Natural Resources 111 United States. Bureau of Land Management. New Mexico State Office 111 National Cartography and Geographic Information Systems Center (U.S.) 109 United States. Bureau of Land Management. Colorado State Office 108 Cobb, Edward Huntington, 1916- 107 National Geographic Society (U.S.). Cartographic Division 103 United States. Bureau of Land Management. Oregon State Office 102 Afghanistan. Department of Geological Survey 101 Colton, Roger B. 1924- 101 Virginia. Department of Environmental Quality 101 United States. Bureau of Land Management. Wyoming State Office 98 Virginia. Division of Soil and Water Conservation 98 Bromery, Randolph W. 1926-2013 96 Pennsylvania. Bureau of Topographic and Geologic Survey 90 United States. Forest Service. Eastern Region 90 United States. Congress. Joint Committee on Taxation 88 Virginia. Division of Mineral Resources 88 California. Division of Mines and Geology 87 United States. Soil Conservation Service 87 United States. Bureau of Land Management. California State Office 86 United States. Agency for International Development 85 California. Department of Water Resources 80 Montana Bureau of Mines and Geology 74 Turner, Kenzie J. 74 Afghanistan. Idārah-i ʻUmūmī-i Jiyūdīzī va Kārtūgrāfī 71 United States. Forest Service. Pacific Northwest Region 71 National Applied Resource Sciences Center (U.S.) 70 United States. Forest Service. Intermountain Region 68 Scott, Glenn R., 1918-2012 67 Dames & Moore 65 Davis, Philip A. 1950- 65 National Wildlife Refuge System (U.S.) 64 Bohannon, Robert G. 63 Maryland Geological Survey 63 Illinois State Geological Survey 61 United States. Army. Corps of Engineers 61 National Science Foundation (U.S.) 60 United States. Forest Service. Rocky Mountain Region 60 United States. National Oceanic and Atmospheric Administration 60 United States. National Ocean Service 59 Hackman, Robert J. 58 United States. Defense Mapping Agency 58 United States. Bureau of Land Management. Idaho State Office 57 University of Texas at Austin. Bureau of Economic Geology 57 Planetary Geology and Geophysics Program (U.S.) 55 Zandle, Gerald L. 55 Clark, Perry S. 52 United States. Bureau of Land Management. Arizona State Office 52 Richmond, Gerald Martin, 1914- 51 United States. Bureau of Land Management. Montana State Office, 51 United States. Bureau of Land Management. Oregon State Office, 51 Gilbert, Francis P. 49 United States. Bureau of Land Management. Nevada State Office 49 United States. Department of Energy 49 United States. Forest Service. Southwestern Region 48 Wisconsin Geological and Natural History Survey 48 Zietz, Isidore, 1919- 48 Massachusetts. Department of Public Works 47 United States. Bureau of Land Management. California State Office, 47 Henderson, John R. 46 U.S. Coast and Geodetic Survey 46 United States. Environmental Protection Agency 46 West Virginia Geological and Economic Survey 45 Ohio 44 Ohio. Division of Geological Survey 44 Roehler, Henry W. 44 Water Resources Council (U.S.) 44 Balsley, J. R. 43 Delaware Geological Survey 43 Fullerton, David S. 43 State Geological and Natural History Survey of Connecticut 43 Stover, Carl W. 43 Tennessee Valley Authority. Maps and Surveys Department 43 United States. Bureau of Indian Affairs 43 United States. Bureau of Land Management. Utah State Office 43 Billingsley, George H. 42