Author
- Geological Survey (U.S.)42
- California. Department of Water Resources40
- World Wildlife Fund (WWF)40
- Cochrane, Guy R.36
- Erdey, Mercedes D.27
- Bay Area Open Space Council26
- GreenInfo Network (Firm)26
- Oak Ridge National Laboratory26
- Conservation Lands Network25
- San Francisco Bay Area Upland Habitat Goals Project25
- Bretz, Carrie K.21
- National Geophysical and Solar-Terrestrial Data Center19
- Johnson, Samuel Y.15
- National Atlas of the United States14
- Hatcher, Gerry12
- Monterey Bay Aquarium Research Institute12
- National Center for Ecological Analysis and Synthesis12
- Arrowsmith, John, 1790-187310
- Finlayson, David P.10
- EROS Data Center9