Collection place
- North America24 objects
- The Americas24 objects
- United States24 objects
- Europe22 objects
- California17 objects
- Campania, Southern Italy16 objects
- Italy16 objects
- Naples, Campania, Southern Italy16 objects
- Southern Europe16 objects
- Southern Italy16 objects
- San Francisco Bay Area, California12 objects
- San Francisco County, California12 objects
- San Francisco Waterfront, San Francisco, San Francisco County12 objects
- San Francisco, San Francisco County, California12 objects
- Asia8 objects
- Site N-5 (North Shore Pump Station), San Francisco Waterfront, San Francisco8 objects
- Northwestern United States6 objects
- Africa5 objects
- Alaska5 objects
- China4 objects