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- Museum number:
- 1-115343
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Francis A. Riddell and William S. Evans Jr.
- Collection place:
- CA-Las-65, Lassen County, California
- Collection date:
- August 5, 1949
- Museum number:
- 1-78577
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Albert Mohr and Francis A. Riddell
- Collection place:
- CA-Lak-30, Lake County, California
- Museum number:
- 1-115284
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Francis A. Riddell and William S. Evans Jr.
- Collection place:
- CA-Las-56, Lassen County, California
- Museum number:
- 1-101747
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Albert Mohr, Francis A. Riddell, and James Allan Bennyhoff
- Collection place:
- CA-Sta-5, Stanislaus County, California
- Collection date:
- February 1949
- Museum number:
- 1-78761
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Albert Mohr and Francis A. Riddell
- Collection place:
- CA-Lak-30, Lake County, California
- Museum number:
- 1-128955
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Adán Eduardo Treganza, Dorothy Menzel, and Francis A. Riddell
- Collection place:
- CA-Sta-45, Stanislaus County, California
- Collection date:
- May 12, 1951
- Museum number:
- 1-100342
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Francis A. Riddell and Franklin Fenenga
- Collection place:
- CA-Fre-29, Fresno County, California
- Collection date:
- Summer 1948
- Museum number:
- 1-114885
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Francis A. Riddell and William S. Evans Jr.
- Collection place:
- CA-Las-40, Susanville, Lassen County
- Museum number:
- 1-197611
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Francis A. Riddell
- Collection place:
- CA-ElD-44, El Dorado County, California
- Collection date:
- March 1956
- Museum number:
- 1-128914
- Object class:
- Choppers (prehistoric cutting tools)
- Collector:
- Adán Eduardo Treganza, Dorothy Menzel, and Francis A. Riddell
- Collection place:
- CA-Sta-5, Stanislaus County, California
- Collection date:
- May 12, 1951