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- ESRI255
- LeadDog Consulting, LLC22
- Environmental Systems Research Institute (Redlands, Calif.)14
- NAVTEQ (Firm)8
- Sanborn Map Company8
- Economic and Social Research Institute7
- Tele Atlas (Firm : U.S.)7
- DeLorme Publishing Company, Inc.6
- Tele Atlas North America, Inc.6
- AND International Publishers N.V.5
- Economic and Social Research Institute (Reston, Va.)5
- Bureau of Transportation Statistics3
- TomTom North America, Inc.3
- CHGIS, Harvard Yenching Institute2
- Community Cartography2
- LAND INFO Worldwide Mapping, LLC2
- National Atlas of the United States and the United States Geological Survey2
- Sistemas de Información Geográfica, S.A. de C.V.2
- CommunityCartography1
- Federal Railroad Administration (FRA)1