Collection place
- Africa35 objects
- Northern Africa29 objects
- Sudan29 objects
- North America22 objects
- The Americas22 objects
- United States22 objects
- Jebel Tomat, White Nile state, Sudan18 objects
- White Nile state, Sudan18 objects
- California15 objects
- Jebel Moya, Sennar state, Sudan11 objects
- Sennar state, Sudan11 objects
- Nevada6 objects
- San Francisco Bay Area, California6 objects
- Asia5 objects
- Churchill County, Nevada5 objects
- Humboldt Lake region, Churchill County, Nevada5 objects
- NV-Ch-15, Churchill County, Nevada4 objects
- Southern California4 objects
- East Asia3 objects
- Eastern Africa3 objects