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- Geographic Data Technology, Inc. (GDT)289
- Environmental Systems Research Institute, Inc. (ESRI)69
- Esri48
- United States Geological Survey46
- United States. Geological Survey44
- TomTom North America, Inc.31
- National Atlas of the United States and the United States Geological Survey29
- Princeton University25
- Bureau of Transportation Statistics15
- U.S. Department of Commerce, Census Bureau11
- United States. Army. Corps of Engineers8
- Willard, Emma, 1787-18708
- Robert de Vaugondy, Didier, 1723-17865
- Tardieu, P. F. (Pierre François), 1757-18225
- Anville, Jean Baptiste Bourguignon d', 1697-17824
- National Park Service4
- Tele Atlas North America, Inc.4
- U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency4
- United States Coast Survey4
- Buache, Jean-Nicolas, 1741-18253