Collection place
- Central California coast37 objects
- Humboldt Lake region, Churchill County, Nevada37 objects
- Monterey County, California37 objects
- Northeastern California36 objects
- Southern Monterey Coast, Monterey County, California35 objects
- CA-Mnt-281, Southern Monterey Coast, Monterey County30 objects
- CA-Nap-129, Napa Valley, Napa County30 objects
- Humboldt lagoons, Humboldt County, California29 objects
- NV-Ch-15, Churchill County, Nevada27 objects
- Northern Sierras, Northern California27 objects
- Big Lagoon, Humboldt County, California26 objects
- CA-Sta-119, Stanislaus County, California24 objects
- Los Angeles County, California23 objects
- Santa Monica Mountains, Los Angeles County, California23 objects
- Southern California23 objects
- North Central California22 objects
- Topanga Canyon, Santa Monica Mountains, Los Angeles County22 objects
- CA-Hum-128 (Paar), Humboldt County, California16 objects
- Sacramento County, California15 objects
- Humboldt Lake Bed, Pershing County, Nevada13 objects