- North America✖Remove constraint Collection place: North America27 objects
- The Americas27 objects
- United States27 objects
- California18 objects
- San Francisco Bay Area, California13 objects
- San Francisco County, California13 objects
- San Francisco, San Francisco County, California13 objects
- San Francisco Waterfront, San Francisco, San Francisco County12 objects
- Northwestern United States8 objects
- Site N-5 (North Shore Pump Station), San Francisco Waterfront, San Francisco8 objects
- Alaska6 objects
- Northern California4 objects
- Western Alaska3 objects
- Bering Sea and North, Alaska2 objects
- Bering Sea, Western Alaska2 objects
- CA-Hum-169 (Tsurai), Humboldt County, California2 objects
- Humboldt County coast, Humboldt County, California2 objects
- Humboldt County, California2 objects
- Northwest Bering Sea, Alaska2 objects
- Northwest Coast, United States2 objects