- North America✖Remove constraint Collection place: North America588 objects
- The Americas588 objects
- United States501 objects
- California431 objects
- San Francisco Bay Area, California185 objects
- Northern California171 objects
- San Francisco County, California149 objects
- San Francisco, San Francisco County, California149 objects
- San Francisco Waterfront, San Francisco, San Francisco County113 objects
- North Central California84 objects
- Site N-5 (North Shore Pump Station), San Francisco Waterfront, San Francisco70 objects
- Sacramento County, California52 objects
- Northeastern California50 objects
- Southern California44 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California42 objects
- CA-Sac-6, Sacramento County, California41 objects
- Mexico38 objects
- Northwestern California37 objects
- Central Mexico34 objects
- Downtown San Francisco, San Francisco, San Francisco County33 objects