Creator
- Nature Conservancy (U.S.)6
- Fire and Resource Assessment Program (Calif.)5
- California Geological Survey4
- Geological Survey (U.S.)2
- Stackhouse, Cecil2
- United States. Bureau of Transportation Statistics2
- Applied Science Associates1
- Coastal Services Center (U.S.)1
- County of San Mateo Information Services Department1
- Environmental Systems Research Institute (Redlands, Calif.)1
- National Atlas of the United States1
- Patuxent Wildlife Research Center1
- Tehama County Public Works1
- U.S. Fish and Wildlife Service1
- United States. Agricultural Research Service1
- United States. National Ocean Service1
- United States. National Oceanic and Atmospheric Administration1