- S1992-1993 #12: Far Western Anthropological Research Group, Inc./Paul Bouey (1992–June 22, 1994)107 objects
- S1975-1976 #49: Department of Anthropology (UC Davis)/Richard E. Hughes (January 9, 1976–February 9, 1987)46 objects
- S1973-1974 #78: San Francisco State University/Tom Jackson (April 5, 1974–April 8, 1974)41 objects
- S1973-1974 #35: Anthropology (UC Berkeley)/Richard L. Burger (November 9, 1973–May 4, 1978)40 objects
- S1973-1974 #80: San Francisco State University/Tom Jackson (April 8, 1974–April 10, 1974)32 objects
- S2007-2008 #12: Anthropology (UC Berkeley)/Darren Modzelewski (June 3, 2008–June 20, 2025)32 objects
- S2004-2005 #8: Anthropology (UC Berkeley)/Kent Lightfoot (May 17, 2005–June 20, 2025)31 objects
- S1978-1979 #57: John Foster/John Foster (March 26, 1979–April 1, 1983)30 objects
- S1991-1992 #28: Thomas N. Layton (April 13, 1992–April 21, 1992)30 objects
- S1991-1992 #30: Indiana University Museum of Archaeology and Anthropology /Noel Justice (May 19, 1992–July 3, 1996)30 objects
- S2001-2002 #15: Anthropology (UC Berkeley)/Kent Lightfoot (January 23, 2002–January 23, 2003)26 objects
- S1980-1981 #14: Peter Banks (August 20, 1980–June 4, 1982)22 objects
- S1969-1970 #119: University of California, Davis/Jerald Jay Johnson (April 24, 1970–November 8, 1971)18 objects
- S1973-1974 #108: City of Sacramento, Department of Parks and Community Services (June 11, 1974–June 28, 1974)15 objects
- S1958-1959 #4: Winfield Scott Wellington (April 3, 1959–unknown)11 objects
- S1981-1982 #8: University of California, Davis/Richard E. Hughes (August 24, 1981–February 9, 1987)11 objects
- S1965-1966 #17: Anthropology (UC Berkeley)/Robert Fleming Heizer (September 20, 1965–June 27, 1966)10 objects
- S1979-1980 #25: University of California, Davis/Richard E. Hughes (November 19, 1979–November 26, 1979)9 objects
- S1991-1992 #22: Far Western Anthropological Research Group, Inc./Paul Bouey (February 12, 1992–June 22, 1994)8 objects
- S1983-1984 #53a: University of Southern California (May 18, 1984–December 3, 1984)7 objects