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Collection place
- North America62
- The Americas62
- United States57
- California52
- Africa28
- Northern California26
- Central California25
- South Central California25
- Namibia17
- Southern Africa17
- North Central California16
- Western Africa11
- Northwestern California9
- Oceania9
- Crescent City, Del Norte County, California6
- Del Norte County, California6
- Elk Valley, Del Norte County, California6
- Melkeltun, Crescent City, Del Norte County6
- British West Africa (historic)5
- Nigeria5