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- Museum number:
- 1-13239
- Object class:
- Mineral and rock samples
- Collector:
- Nels C. Nelson
- Collection place:
- CA-CCo-295, Richmond, Contra Costa County
- Collection date:
- 1907
- Museum number:
- 1-13225
- Object class:
- Mineral and rock samples
- Collector:
- Nels C. Nelson
- Collection place:
- CA-CCo-295, Richmond, Contra Costa County
- Collection date:
- 1907
- Museum number:
- 1-13238
- Object class:
- Mineral and rock samples
- Collector:
- Nels C. Nelson
- Collection place:
- CA-CCo-295, Richmond, Contra Costa County
- Collection date:
- 1907
- Museum number:
- 1-11515
- Object class:
- Mineral and rock samples
- Collector:
- A. V. Wepfer and Nels C. Nelson
- Collection place:
- CA-CCo-295, Richmond, Contra Costa County
- Collection date:
- July-August 1906