- North America✖Remove constraint Collection place: North America843 objects
- The Americas843 objects
- California842 objects
- United States842 objects
- Northern California575 objects
- North Central California532 objects
- Sacramento County, California419 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California385 objects
- CA-Sac-6, Sacramento County, California385 objects
- San Francisco Bay Area, California226 objects
- Contra Costa County, California208 objects
- Oakley, Contra Costa County, California184 objects
- CA-CCo-138, Oakley, Contra Costa County183 objects
- San Joaquin County, California99 objects
- CA-SJo-43, San Joaquin County, California36 objects
- CA-SJo-42, San Joaquin County, California34 objects
- Santa Barbara County, California32 objects
- Southern California32 objects
- Northern Channel Islands, Santa Barbara County, California31 objects
- Santa Rosa Island, Santa Barbara Channel Islands, Southern California30 objects