Creator
- Amador County (Calif.)1
- Amador County Information Technology Department, GIS Division1
- CalTrans, Napa County Public Works, Office of Historic Preservation1
- City of Berkeley, CA1
- County of Marin1
- County of Napa ITS Department1
- MTC1
- Napa County Information Technology Services1
- San Mateo County (Calif.)1
- Santa Clara County1
- Solano County Resource Management Department1
- Solano County, CA Department of Resource Management - GIS assistance provided by Mike Bobbitt (Mike Bobbitt and Associates).1
- U.S. Geological Survey1
- US Census Bureau1
- Vestra Resources Inc. Redding CA1