Publisher
- National Atlas of the United States70
- Geological Survey (U.S.)29
- Gap Analysis Program (U.S.)3
- U.S. Census Bureau. Geography Division3
- United States. National Oceanic and Atmospheric Administration3
- Canada Centre for Mapping1
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)1
- United States. Bureau of Transportation Statistics1
- United States. National Ocean Service1