Publisher
- Inyo County (Calif.). Information Services Department1
- Mono County (Calif.). Information Technology1
- Nature Conservancy (U.S.)1
- Nevada County (Calif.). Geographic Information Systems1
- Riverside County (Calif.). Geographic Information Services1
- Stanford Digital Repository1
- Stanford University. Woods Institute for the Environment1
- Stanislaus County GIS Division1
- United States. Bureau of Transportation Statistics1