Creator
- Santa Cruz County (Calif.) -- Assessor's Office3
- Sidney Leiken Enterprises3
- Silver, Jessica3
- Solano County GIS3
- Sudden Oak Death Project, Center for the Assessment and Monitoring of Forestry and Environmental Resources (CAMFER) at U.C. Berkeley3
- Theo G. Meyer and Sons3
- U.S. Geological Survey3
- US Census Bureau3
- United States. Environmental Protection Agency3
- United States. Environmental Protection Agency. Region IX3
- United States. Federal Highway Administration3
- United States. Forest Service3
- United States. National Marine Fisheries Service3
- University of California, Riverside. College of Engineering. Center for Environmental Research and Technology3
- Vestra Resources Inc. Redding CA3
- W. & A.K. Johnston Limited3
- Waterborne Commerce Statistics Center (U.S.)3
- Wyld, James, 1812-18873
- Wyoming Geographic Information Sciences Center3
- Afghanistan. Topographic Mapping Office2