Geological Survey (U.S.) 25,374
Geological Survey of Canada 3,448
Kentucky Geological Survey 2,101
U.S. Atomic Energy Commission 1,341
Geological Society of America 1,081
Dibblee, T. W (Thomas Wilson), 1911-2004 1,005
Tennessee Division of Geology 851
Australia Bureau of Mineral Resources, Geology and Geophysics 820
California Division of Mines and Geology 756
International Geological Congress 683
Minch, John A (John Albert) 669
Tennessee Valley Authority 660
SpringerLink (Online service) 655
Dibblee Geology Center 644
United States National Aeronautics and Space Administration 575
American Association of Petroleum Geologists 574
Geological Survey of Western Australia 506
Geological Survey of Great Britain 504
British Geological Survey 467
Illinois State Geological Survey 439
Wilson, Charles W., Jr., 1905-1985 427
Pennsylvania Bureau of Topographic and Geologic Survey 416
State Geological and Natural History Survey of Connecticut 403
Geological Survey (South Africa) 374
Stanford Geological Survey 372
Montana Bureau of Mines and Geology 358
Kansas Geological Survey 353
Geological Survey of India 351
West Virginia Geological and Economic Survey 350
Geological Society of London 335
Fiske Icelandic Collection 305
Chishitsu Chōsajo (Japan) 300
Minnesota Geological Survey 295
Australia Geological Branch 281
Darwin, Charles, 1809-1882 274
Geological Survey of Wyoming 269
Nevada Bureau of Mines and Geology 264
Maryland Geological Survey 260
Williams and Heintz Map Corporation 259
Massachusetts Department of Public Works 258
American Geological Institute 256
University of Texas at Austin Bureau of Economic Geology 254
Oregon Department of Geology and Mineral Industries 251
Washington (State) Division of Geology and Earth Resources 250
United States National Park Service 249
North Dakota Geological Survey 247
Darton, Nelson Horatio, 1865-1948 236
New Mexico Bureau of Mines and Mineral Resources 236
Geological Association of Canada 231
United States Department of the Interior 230
Oklahoma Geological Survey 229
Lyell, Charles, Sir, 1797-1875 225
Jillson, Willard Rouse, 1890-1975 224
Ehrenspeck, Helmut E 220
Colorado Geological Survey 218
Indiana Geological Survey 218
A. Hoen & Co 214
American Geophysical Union 210
Wilson, Charles William Jr 210
Michigan Geological Survey Division 203
United States Bureau of Mines 203
United States Department of Energy 199
Senécal, C. O (Clovis Omer) 198
Utah Geological Survey 198
Ontario Geological Survey 194
United States Army. Corps of Engineers 192
Delaware Geological Survey 191
Ohio Division of Geological Survey 191
Colton, Roger B (Roger Burnham), 1924- 188
Missouri Division of Geology and Land Survey 186
Museum of Practical Geology (Great Britain) 186
Iowa Geological Survey 183
New York State Geological Survey 182
Roehler, Henry W 179
Virginia Division of Mineral Resources 178
Institute of Geological Sciences (Great Britain) 177
Canadian Society of Petroleum Geologists 173
Geological Survey of Pakistan 171
Thomas W. Dibblee, Jr. Geological Foundation 166
Rowley, Peter D 165
Utah Geological and Mineral Survey 165
Wisconsin Geological and Natural History Survey 165
Geological Survey of Alabama 162
Sveriges geologiska undersökning 160
Arizona Geological Survey 159
Hackman, Robert J 159
Chishitsu Chōsajo (Japan) 158
United States Bureau of Land Management 156
Unesco 152
American Association of Petroleum Geologists Pacific Section 149
Maine Geological Survey 148
Ontario Department of Mines 148
United States Army Map Service 147
Miller, Robert A 143
Geological Survey of Pennsylvania 142
Stose, George Willis, 1869-1960 142
Geological Survey of Queensland 141
Moore, Samuel L 140
Richmond, Gerald Martin, 1914- 140
Yale University 140