- S1981-1982 #8: University of California, Davis/Richard E. Hughes (August 24, 1981–February 9, 1987)154 objects
- S1990-1991 #3: University of California, Riverside (August 14, 1990–November 20, 1992)154 objects
- S1974-1975 #44: California Department of Parks and Recreation/Anne Peak (January 17, 1975–December 18, 1975)106 objects
- S1991-1992 #29: United States Forest Service/James L. Boyton (May 21, 1992–August 2, 1995)85 objects
- S1980-1981 #3: Department of Anthropology (CSU Sacramento) (July 14, 1980–December 19, 1980)73 objects
- S1971-1972 #17: University of California, Riverside/James F. O'Connell (August 20, 1971–1972)59 objects
- S1978-1979 #57: John Foster/John Foster (March 26, 1979–April 1, 1983)27 objects
- S1992-1993 #5: Biosystems Analysis (1992–November 20, 1992)26 objects
- S1971-1972 #120: Anthropology (UC Berkeley)/Robert Fleming Heizer (April 3, 1972–October 14, 1980)23 objects
- S1971-1972 #12: Stanford University/Charles Nelson (August 11, 1971–September 9, 1971)22 objects
- S1969-1970 #119: University of California, Davis/Jerald Jay Johnson (April 24, 1970–November 8, 1971)15 objects
- S1979-1980 #66: Department of Anthropology (CSU Sacramento) (May 13, 1980–July 14, 1980)15 objects
- S1983-1984 #55: University of California, Riverside (May 23, 1984–December 17, 1984)15 objects
- S1973-1974 #108: City of Sacramento, Department of Parks and Community Services (June 11, 1974–June 28, 1974)14 objects
- S1976-1977 #16: Department of Anthropology (UC Davis)/Martin A. Baumhoff (September 29, 1976–February 25, 1977)14 objects
- S1994-1995 #2: American Museum of Natural History/David Hurst Thomas (August 30, 1994–February 1, 1996)13 objects
- S1963-1964 #74: San Francisco State University (March 20, 1964–January 7, 1965)12 objects
- S1971-1972 #11: Department of Anthropology (Stanford Univ.)/Robert L. Hoover (August 3, 1971–unknown)10 objects
- S1976-1977 #20: Anthropology (UC Berkeley)/Thomas Roy Hester (October 20, 1976–June 6, 1977)10 objects
- S1964-1965 #74: State of California, Division of Beaches and Parks/Francis A. Riddell (March 19, 1965–September 2, 1981)8 objects