Creator
- United States. Bureau of Transportation Statistics7
- Geological Survey (U.S.)4
- National Atlas of the United States4
- Battelle Memorial Institute1
- Canada Centre for Remote Sensing1
- Carey, Mathew, 1760-18391
- Environmental Systems Research Institute (Redlands, Calif.)1
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)1
- Jessberger, Steven1
- John A. Volpe National Transportation Systems Center (U.S.)1
- Miller, David1
- Stanford University. Center for Spatial and Textual Analysis1
- Strocko, Ed1
- United States. Federal Highway Administration1
- United States. Federal Highway Administration. Office of Highway Policy Information1