[18]Hrdlička, “The Coming of Man from Asia in the Light of Recent Discoveries,” Proceedings, American Philosophical Society, 71:401 (1932).

[19]Arthur Keith, The Antiquity of Man (1920), 286.

[20]H. V. Walter, A. Cathoud, and Anibal Mattos, “The Confins Man: A Contribution to the Study of Early Man in South America,” in Early Man, 345, 348.

[21]Louis R. Sullivan, and Milo Hellman, “The Punin Calvarium,” Anthropological Papers, American Museum of Natural History, 23:308-338 (1925). Paul Rivet, “La Race de la Lagoa Santa chez les populations précolombiennes de l’équateur,” Bulletins et Mémoires, Société d’Anthropologie de Paris, 5th ser. 9:209-271 (1908).

[22]Junius Bird, “Antiquity and Migrations of the Early Inhabitants of Patagonia,” Geographical Review, 28:250-275 (1938); Willard F. Libby, Radiocarbon Dating (1955), 134.

[23]Albert E. Jenks, Pleistocene Man in Minnesota (1936).

[24]Ernst Antevs, “The Age of ‘Minnesota Man,’” Year Book, Carnegie Institution, 36:335-338 (1937), and “Was ‘Minnesota Girl’ Buried in a Gully?” Journal of Geology, 46:293-295 (1938). Kirk Bryan and Paul MacClintock, “What Is Implied by ‘Disturbance’ at the Site of Minnesota Man?” Journal of Geology, 46:279-292. G. F. Kay and M. M. Leighton, “Geological Notes on the Occurrence of ‘Minnesota Man,’” Journal of Geology, 46:268-278.

[25]Earnest A. Hooton, Apes, Men, and Morons (1937), 104.

[26]Albert E. Jenks and Lloyd A. Wilford, “Sauk Valley Skeleton,” Bulletin, Texas Archaeological and Paleontological Society, 10:162-163 (1938).

[27]Hrdlička, “Early Man in America: What Have the Bones to Say?,” 97-98.