Publisher
- Geological Survey (U.S.)10
- California. Department of Fish and Game. Marine Resources Region5
- North American Cartographic Information Society4
- United States. Bureau of the Census. Geography Division4
- Environmental Systems Research Institute (Redlands, Calif.)2
- Wyoming Geographic Information Sciences Center2
- Bay Area Open Space Council1
- International Steering Committee for Global Mapping1
- Stanford University. Woods Institute for the Environment1
- U.S. Fish and Wildlife Service1
- United States. Bureau of Transportation Statistics1