Publisher
- United States. Department of Housing and Urban Development53
- United States. Bureau of Transportation Statistics29
- North American Cartographic Information Society11
- Geological Survey (U.S.)10
- National Atlas of the United States9
- Environmental Systems Research Institute (Redlands, Calif.)3
- Gap Analysis Program (U.S.)3
- International Rice Research Institute3
- University of California, Berkeley. Museum of Vertebrate Zoology3
- National Marine Protected Areas Center (U.S.)2
- Stanford Digital Repository2
- University of Richmond. Digital Scholarship Lab2
- California. Department of Fish and Game. Marine Resources Region1
- Cartography Associates1