Creator
- Geological Survey (U.S.)13
- Environmental Systems Research Institute (Redlands, Calif.)11
- Geological Survey (U.S.) Minerals Information Team7
- National Atlas of the United States7
- United States. Department of Housing and Urban Development4
- Geological Survey (U.S.). Water Resources Division. Wisconsin District1
- 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. Bureau of Transportation Statistics1
- United States. Environmental Protection Agency1