[4]I. C. Russell, The Geological History of Lake Lahontan (Monograph, U.S. Geological Survey, no. 11, 1885). W. J. McGee, “An Obsidian Implement from Pleistocene Deposit in Nevada,” American Anthropologist, 2:301-312 (1889).
[5]S. W. Williston, “Homo sapiens in Pleistocene of Kansas,” Bulletin, Kansas University Geological Survey, 2:301 (1897). E. H. Sellards, “Early Man in America,” Bulletin, Geological Society of America, 51:387 (1940).
[6]J. D. Figgins, “The Antiquity of Man in America,” Natural History, 27:229-231 (1927). Harold J. Cook, “Definite Evidence of Human Artifacts in the American Pleistocene,” Science, new ser., 62:459-460 (1925).
[7]Figgins, op. cit., 234-239. Harold J. Cook, “New Geological and Paleontological Evidence Bearing on the Antiquity of Mankind in America,” Natural History, 27:244-247 (1927). O. F. Evans, “The Antiquity of Man As Shown at Frederick, Oklahoma: A Criticism,” Journal, Washington Academy of Sciences, 20:475-479 (1930). Harold J. Cook, “The Antiquity of Man As Indicated at Frederick, Oklahoma: A Reply.” Journal, Washington Academy of Sciences, 21:161-167 (1931).
[8]Figgins, op. cit., 232-234.
[9]Barnum Brown, “Recent Finds Relating to Prehistoric Man in America,” Bulletin, New York Academy of Medicine, 2nd ser., 4:824-828 (1928). H. Marie Wormington, Ancient Man in North America (2nd rev. ed., 1944), 6-7.
[10]William J. Mayer-Oakes and Robert E. Bell, “Early Man Site Found in Highland Ecuador,” Science, 131:1805-1806 (1960).
[11]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).
[12]M. R. Harrington, An Ancient Site at Borax Lake, California (Southwest Museum Papers, no. 16, 1948), 61, 63.
[13]Edgar B. Howard, “Caves Along the Slopes of the Guadalupe Mountains,” Bulletin, Texas Archaeological and Paleontological Society, 4:17-18 (1932).