John C. Sheppard No description specified. 1-4 (4 Records) Documents Chapter 6: Holocene History of Little Lake, Mojave Desert, California (1978) Marmes Site Revisited: Dating and Stratigraphy (1984) Radiocarbon Determinations From CA-SCR-79, Capitola, California (1985) Reevaluation of the Marmes Rockshelter Radiocarbon Chronology (1987)