- California Geological Survey20
- Marshall, Gerald18
- Mendes, Eric18
- California. Department of Conservation16
- Navarro, Fernando10
- Powell, Susan10
- International Association of Seismology and Physics of the Earth's Interior7
- International Heat Flow Commission7
- Oklahoma State University. Department of Geography. Cartography Service7
- Rosenberg, Lewis I.4
- Sanborn Map Company (cartographer)4
- California. Dept. of Conservation.2
- Monterey County (Calif.)2
- Bethe, Anne-Laure1
- Blackburn, Laura1
- Faucherre, Nicolas, 1957-1
- Fire and Resource Assessment Program (Calif.)1
- Geological Survey (U.S.)1
- Gherdevich, Davide1
- Henriot, Christian1