Creator
- Geological Survey (U.S.)21
- Environmental Systems Research Institute (Redlands, Calif.)12
- National Atlas of the United States11
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)8
- Canada Centre for Remote Sensing6
- United States. Department of Housing and Urban Development4
- Canada Centre for Mapping2
- United States. Bureau of Transportation Statistics2
- California. Department of Fish and Game. Marine Resources Region1
- International Association of Seismology and Physics of the Earth's Interior1
- International Heat Flow Commission1
- National Energy Information Center (U.S.)1
- Oklahoma State University. Department of Geography. Cartography Service1
- United States Geological Survey1
- United States. Agricultural Research Service1
- United States. Federal Transit Administration1
- United States. Forest Service1