Publisher
- California. Metropolitan Transportation Commission5
- California. Department of Transportation2
- County of Santa Cruz Information Services Department2
- Humboldt County Planning and Building Department2
- United States. Bureau of Transportation Statistics2
- United States. National Oceanic and Atmospheric Administration2
- Bay Area Open Space Council1
- Coastal Services Center (U.S.)1
- County of San Mateo Information Services Department1
- National Atlas of the United States1
- Sacramento County GIS1
- Stanford Digital Repository1
- Yuba County (Calif.). Information Technology Services1