- North America✖Remove constraint Collection place: North America57 objects
- The Americas57 objects
- United States53 objects
- California46 objects
- San Francisco Bay Area, California39 objects
- San Francisco County, California39 objects
- San Francisco, San Francisco County, California39 objects
- San Francisco Waterfront, San Francisco, San Francisco County38 objects
- Site N-5 (North Shore Pump Station), San Francisco Waterfront, San Francisco17 objects
- Northern California6 objects
- Northwestern California5 objects
- Site C-4 (South Side), San Francisco Waterfront, San Francisco5 objects
- Great Plains, North America4 objects
- Northwestern United States4 objects
- Site SE, San Francisco Waterfront, San Francisco4 objects
- Site C-1 (Berry), San Francisco Waterfront, San Francisco3 objects
- Site FQ-2, San Francisco Waterfront, San Francisco3 objects
- Churchill County, Nevada2 objects
- NV-Ch-18 (Lovelock Cave), Churchill County, Nevada2 objects
- Nevada2 objects