[64]Frank H. H. Roberts, Jr., “Developments in the Problem of the North American Paleo-Indian,” Smithsonian Miscellaneous Collections, 100:96-97 (1940).
[65]Kirk Bryan, “Prehistoric Quarries and Implements of Pre-Amerindian Aspect in New Mexico,” Science, new ser., 87:345 (1938).
[66]E. B. Sayles, An Archaeological Survey of Texas (Medallion Papers, Gila Pueblo, no. 17. 1935), table 4, plate 19. J. E. Pearce, “Tales That Dead Men Tell,” University of Texas Bulletin, no. 3537 (1935), 25, plate 3.
[67]Junius Bird, “Antiquity and Migrations of the Early Inhabitants of Patagonia,” Geographical Review, 28:273 (1938), fig. 27. Walter Dupouy, “Sobre una punta litica de tipo singular en Venezuela,” Acta Venezolana, 1:80-87 (1945).
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[69]F. B. Richardson, “Nicaragua,” Year Book, Carnegie Institution, 1941 (no. 40), 300-302. F. B. Richardson and Karl Ruppert, “Nicaragua,” Year Book, Carnegie Institution, 1942 (no. 41), 269-270.
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[71]G. F. Becker, “Antiquities from Under Tuolumne Table Mountain in California,” Bulletin, Geological Society of America, 2:193-194 (1891).
[72]W. H. Holmes, Handbook of Aboriginal American Antiquities (Bulletin, Bureau of American Ethnology, no. 60, 1919, part 1), 62.
[73]L. S. Cressman, personal communication, 1949.