Note 11 — 7 THE ARTIFACTS OF EARLY MAN IN THE NEW WORLD
Reading edition
John L. Cotter, “The Occurrence of Flints and Extinct Animals in Pluvial Deposits near Clovis, New Mexico: Part 4 of Report on the Excavations at the Gravel Pit in 1936,” Proceedings, Academy of Natural Sciences of Philadelphia, 89:2-16 (1937).