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- Geological Survey (U.S.)381
- Tanzania. Idara ya Upimaji na Ramani39
- United States. Central Intelligence Agency16
- United States. Bureau of Indian Affairs. Phoenix Area Office. Branch of Roads10
- United States. Bureau of Indian Affairs. Sacramento Area Office. Branch of Roads8
- United States. Bureau of Land Management6
- United States. Bureau of Land Management. California Desert District6
- National Geographic Society (U.S.). Cartographic Division5
- Clarke, M. D.3
- National Earthquake Information Center3
- United States. Bureau of Indian Affairs. Albuquerque Area Office. Branch of Roads3
- United States. Bureau of Land Management. Moab District3
- United States. Forest Service. Eastern Region3
- Geological Survey of Canada2
- Guyana Geology and Mines Commission2
- United States. Bureau of Land Management. Cedar City District2
- Aces Products (Firm)1
- Beg, Mirza Akhtar, 1943-1
- Bluemle, John P.1
- Brezinski, David K.1
