Creator
- Geological Survey (U.S.)6
- National Atlas of the United States5
- Environmental Systems Research Institute (Redlands, Calif.)4
- United States. Bureau of Transportation Statistics4
- Center for Spatial and Textual Analysis2
- United States. Bureau of the Census. Geography Division2
- Canada Centre for Remote Sensing1
- Carey, Mathew, 1760-18391
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)1
- Stanford University. Center for Spatial and Textual Analysis1
- U.S. Census Bureau. Geography Division1
- United States. Federal Highway Administration1