- S1979-1980 #27: California State University, East Bay/Colin L. Busby (1979–unknown)13 objects
- S1974-1975 #90: Anthropology (UC Berkeley)/Christopher R. Corson (April 15, 1975–August 18, 1975)9 objects
- S1991-1992 #22: Far Western Anthropological Research Group, Inc./Paul Bouey (February 12, 1992–June 22, 1994)8 objects
- S1969-1970 #119: University of California, Davis/Jerald Jay Johnson (April 24, 1970–November 8, 1971)7 objects
- S1964-1965 #74: State of California, Division of Beaches and Parks/Francis A. Riddell (March 19, 1965–September 2, 1981)4 objects
- S1973-1974 #78: San Francisco State University/Tom Jackson (April 5, 1974–April 8, 1974)4 objects
- S1973-1974 #110: City of Sacramento, Department of Parks and Community Services/James Allan Bennyhoff (June 14, 1974–June 17, 1974)3 objects
- S1972-1973 #50: Anthropology (UC Berkeley)/Thomas Roy Hester (January 24, 1973–August 20, 1973)2 objects
- S1976-1977 #19: Anthropology (UC Berkeley)/Thomas Roy Hester (October 19, 1976–October 25, 1976)2 objects
- S1976-1977 #91: NASCO Nature Study Aids/Chase Myron (June 23, 1977–October 14, 1977)2 objects
- S2007-2008 #12: Anthropology (UC Berkeley)/Darren Modzelewski (June 3, 2008–June 20, 2025)2 objects
- S1954-1955 #7 [formerly I-55-A]: California Academy of Sciences (January 26, 1955–November 17, 1976)1 objects
- S1967-1968 #25 [formerly I-54-B]: University of California, Riverside/John F. Goins (July 1, 1954–present)1 objects
- S1970-1971 #25: Oakland Museum of California (September 25, 1970–April 9, 1971)1 objects
- S1971-1972 #82: Zoology (UC Berkeley)/Robert Fleming Heizer (October 10, 1971–May 25, 1972)1 objects
- S1972-1973 #72: Anthropology (UC Berkeley)/Thomas Roy Hester (March 21, 1973–July 5, 1973)1 objects
- S1974-1975 #73: University of California, Davis/Peter Schulz (March 7, 1975–July 31, 1976)1 objects
- S1978-1979 #35: Albert B. Elsasser/Larry Michalak (November 22, 1978–November 22, 1978)1 objects
- S1983-1984 #46: C. Parr Nature Museum (March 23, 1984–July 14, 1987)1 objects
- S1987-1988 #26: C. Parr Nature Museum (December 7, 1987–October 17, 1990)1 objects