Publisher
- Geological Survey (U.S.)182
- California. Department of Fish and Game. Marine Resources Region126
- International Steering Committee for Global Mapping22
- North American Cartographic Information Society4
- County of Santa Cruz Information Services Department3
- United States. Bureau of Transportation Statistics3
- Humboldt County Planning and Building Department2
- Bay Area Open Space Council1
- Monterey County (Calif.)1
- National Atlas of the United States1
- National Geophysical Data Center1