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- Museum number:
- 1-104584
- Collector:
- Francis A. Riddell and Harry Starr Riddell Jr.
- Collection place:
- Lassen County, California
- Collection date:
- 1948
- Museum number:
- 1-102010
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948
- Museum number:
- 1-105811
- Collector:
- Arnold R. Pilling, Francis A. Riddell, and Franklin Fenenga
- Collection place:
- CA-Son-299, Bodega Harbor, Sonoma County
- Collection date:
- June 25, 1949
- Museum number:
- 1-213687.1
- Collector:
- Francis A. Riddell
- Collection place:
- CA-Yol-13 (Mustang Mound), Yolo County, California
- Collection date:
- 1958
- Museum number:
- 1-102014
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948
- Museum number:
- 1-101987
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948
- Museum number:
- 1-102123
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948
- Museum number:
- 1-102017
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948
- Museum number:
- 1-102044
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948
- Museum number:
- 1-101977
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-30, Fresno County, California
- Collection date:
- September 1948