 He was working on his previous notes and collections in 1960 when a traffic accident caused his death (Ezell 1961; Pourade 1966; Hanna 1982, 2013).Rogers' fieldwork included extensive survey and excavation work in the coastal zone of San Diego County and northwestern Baja California, as well as throughout the California deserts to the east and western Arizona (Apple 2013; Hedges 2013; Laylander and Bendímez 2013; Pigniolo 2013; Schaefer 2013; Schneider 2013).He identified and named the San Dieguito, La Jolla, Amargosa, and Yuman archaeological complexes (Rogers 1929a, 1929b, 1939, 1945, 1966; Warren 1966, 2013; Sutton 2013).