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- Museum number:
- 1-197358
- Object class:
- Mineral and rock samples
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Las-126, Eagle Lake, Lassen County
- Collection date:
- 1956
- Museum number:
- 1-104743
- Object class:
- Mineral and rock samples
- Collection place:
- CA-ElD-2, El Dorado County, California
- Collection date:
- April 1949
- Museum number:
- 1-185863
- Object class:
- Mineral and rock samples
- Collector:
- Harry Starr Riddell Jr. and Olline Riddell
- Collection place:
- CA-Iny-347, Inyo County, California
- Museum number:
- 1-117643
- Object class:
- Mineral and rock samples
- Collector:
- Arnold R. Pilling and Franklin Fenenga
- Collection place:
- CA-Lak-72, Lake County, California
- Museum number:
- 1-197649
- Object class:
- Mineral and rock samples
- Collection place:
- CA-ElD-38, El Dorado County, California
- Collection date:
- March 1956
- Museum number:
- 1-181167
- Object class:
- Mineral and rock samples
- Collector:
- Harry Starr Riddell Jr. and Olline Riddell
- Collection place:
- CA-Iny-76, Inyo County, California
- Museum number:
- 1-184143
- Object class:
- Mineral and rock samples
- Collector:
- Harry Starr Riddell Jr. and Mrs. Harry S. Riddell Jr.
- Collection place:
- CA-Iny-317, Inyo County, California
- Museum number:
- 1-180934
- Object class:
- Mineral and rock samples
- Collector:
- Harry Starr Riddell Jr. and Olline Riddell
- Collection place:
- CA-Iny-76, Inyo County, California
- Museum number:
- 1-154723
- Object class:
- Mineral and rock samples
- Collector:
- Adán Eduardo Treganza, Albert B. Elsasser, and Robert Fleming Heizer
- Collection place:
- CA-Nap-174, Napa Valley, Napa County
- Museum number:
- 1-180415
- Object class:
- Mineral and rock samples
- Collector:
- Harry Starr Riddell Jr. and Olline Riddell
- Collection place:
- CA-Iny-67, Inyo County, California