Publisher
- Geological Survey (U.S.)13
- National Atlas of the United States13
- U.S. Geological Survey5
- North American Cartographic Information Society4
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)3
- Canada Centre for Mapping2
- Cartography Associates2
- National Marine Protected Areas Center (U.S.)2
- International Heat Flow Commission1
- National Geophysical and Solar-Terrestrial Data Center1
- United States. Bureau of Transportation Statistics1
- United States. Department of State. Humanitarian Information Unit1
- United States. Department of State. Office of the Geographer. Humanitarian Information Unit1