- California181 objects
- North America181 objects
- The Americas181 objects
- United States✖Remove constraint Collection place: United States181 objects
- Northern California150 objects
- North Central California134 objects
- Sacramento County, California104 objects
- Sacramento, Sacramento County, California26 objects
- CA-Sac-60 (Hicks 1), Sacramento County, California21 objects
- CA-Sac-60 or 61 (Hicks site), Sacramento County, California21 objects
- Central California18 objects
- Central California coast18 objects
- Santa Cruz County, California18 objects
- Santa Cruz, Santa Cruz County, California18 objects
- Northwestern California16 objects
- Butte County, California15 objects
- Feather River/Lower Horvat Creek watershed15 objects
- Humboldt County, California15 objects
- Klamath River, Humboldt County, California14 objects
- Weitchpec, Humboldt County, California14 objects