S1974-1975 #90: Department of Anthropology (UC Berkeley)/Christopher R. Corson (April 15, 1975–August 18, 1975), S1979-1980 #27: California State University, East Bay/Colin L. Busby (1979–unknown), S1991-1992 #28: Thomas N. Layton (April 13, 1992–April 21, 1992), and S1991-1992 #30: Indiana University Museum of Archaeology and Anthropology /Noel Justice (May 19, 1992–July 3, 1996)