Creator
- United States. Department of Housing and Urban Development16
- Kelso, Nathaniel Vaughn10
- Patterson, Tom10
- Environmental Systems Research Institute (Redlands, Calif.)3
- Department of Conservation & Development, Contra Costa County2
- Geological Survey (U.S.)2
- United States. Bureau of Transportation Statistics2
- United States. Bureau of the Census. Geography Division2
- Alameda County Registrar of Voters 1
- Amador County (Calif.)1
- Amador County Information Technology Department, GIS Division1
- County of San Mateo Information Services Department1
- Department of Elections, Francisco County, California. 1
- Napa County Geographic Information Systems 1
- Sacramento County GIS1
- San Francisco Department of City Planning1
- U.S. Census Bureau. Geography Division1