- Environmental Systems Research Institute (Redlands, Calif.)11
- Nature Conservancy (U.S.)11
- Erdey, Mercedes D.9
- Phillips, Eleyne L.9
- Arndt, Raymond E.8
- Bawiec, Walter J.8
- Beikman, Helen M.8
- King, Philip B.8
- Schruben, Paul G.8
- DTIS7
- National Atlas of the United States7
- California. Department of Fish and Game. Marine Resources Region6
- Department of Conservation & Development, Contra Costa County6
- Fire and Resource Assessment Program (Calif.)6
- Bay Area Open Space Council5
- Bush, Charles A.5
- Conservation Lands Network5
- GreenInfo Network (Firm)5
- Reed, John Calvin, Jr. 1930-5
- San Francisco Bay Area Upland Habitat Goals Project5
