Creator
- Canada Centre for Remote Sensing2
- Geological Survey (U.S.)2
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)2
- United States. Bureau of Transportation Statistics2
- United States. Bureau of the Census. Geography Division2
- Carey, Mathew, 1760-18391
- Center for Spatial and Textual Analysis1
- Environmental Systems Research Institute (Redlands, Calif.)1
- National Atlas of the United States1
- Stanford University. Center for Spatial and Textual Analysis1