[7]Aleš Hrdlička, “The Derivation and Probable Place of Origin of the North American Indian,” Proceedings, 18th International Congress of Americanists (1913), 62.
[8]Earnest A. Hooton, Introduction to Harold S. Gladwin, Men Out of Asia (1947), xi.
[9]Gladwin, Excavations at Snaketown, 2:131, 152, 136.
[10]Roland B. Dixon, The Building of Cultures (1928), 206-207.
[11]Curt Sachs, The History of Musical Instruments (1940), 178.
[12]Alfred Kroeber, Anthropology (1923), 386.
[13]Alfred V. Kidder, Foreword to Gladwin, op. cit., 2:vii.
[14]Nordenskiöld, “Origin, etc.,” 256, 249.
[15]Willard F. Libby, Radiocarbon Dating (1955), 129.
[16]Gonzalo Aguirre Beltrán, La Población negra de México (1947).