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- Geographic Data Technology, Inc. (GDT)104
- United States. Department of Housing and Urban Development53
- United States. Geological Survey44
- United States. Bureau of Transportation Statistics29
- Cao, Changyong21
- Earle, Carville21
- Heppen, John21
- Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology.21
- Otterstrom, Samuel21
- TomTom North America, Inc.21
- Esri17
- Stackhouse, Cecil17
- TTG, Inc.17
- Environmental Systems Research Institute (Redlands, Calif.)14
- Geological Survey (U.S.)11
- Kelso, Nathaniel Vaughn11
- National Atlas of the United States11
- Patterson, Tom11
- U.S. Department of Commerce, Census Bureau8
- United States. Bureau of the Census. Geography Division6