[25]Harold S. Gladwin, _Men Out of Asia_ (1947), 62. [26]Carl Sauer, personal communication, 1946. [27]Gladwin, _op. cit._, 56-59. [28]_Ibid._, 95-103. [29]_Ibid._, 137-146. [30]_Ibid._, 147-156, 165-183. [31]_Ibid._, 221-243. [32]Joseph B. Birdsell, “The Problem of the Early Peopling of the Americas as viewed from Asia,” in _Papers on the Physical Anthropology of the American Indian_, ed. William S. Laughlin (1951), 1-68. Chapter 10 [1]Erland Nordenskiöld, “Origin of the Indian Civilizations in South America,” in _The American Aborigines_ (1933), 262-263. Harold S. Gladwin, _Excavations at Snaketown: Part 2, Comparisons and Theories_ (Medallion Papers, Gila Pueblo, no. 26, 1937), 137-148. Kenneth P. Emory, “Oceanic Influence on American Indian Culture: Nordenskiöld’s View,” _Journal, Polynesian Society_, 51:126-135 (1942). [2]Robert H. Lowie, _The History of Ethnological Theory_ (1937), 77-78. [3]Herbert J. Spinden, “Origin of Civilizations in Central America and Mexico,” in _The American Aborigines_ (1933), 225. [4]Spinden, “The Prosaic vs. the Romantic School in Anthropology,” in _Culture, the Diffusion Controversy_ (1927), 53. [5]Nordenskiöld, _An Ethno-Geographical Analysis of the Material Culture of Two Indian Tribes in the Gran Chaco_ and _Modifications in Indian Customs Through Inventions and Loans_ (Comparative Ethnographical Studies, nos. 1 and 8, 1919, 1930) and “The American Indian as an Inventor,” in _Source Book in Anthropology_, ed. Kroeber and Waterman (rev. ed., 1931), 488-505, and “Origin of the Indian Civilizations in South America,” in _The American Aborigines_ (1933), 249-311. [6]Nordenskiöld, “Origin, etc.,” 287. [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). [17]Gladwin, _Men Out of Asia_ (1947), xiv-xv. [18]Peter H. Buck, _Vikings of the Sunrise_ (1938), 314. [19]Gilbert N. Lewis, “The Beginning of Civilization in America,” _American Anthropologist_, new ser., 49:1-24 (1947). [20]Thor Heyerdahl, “The Voyage of the Raft _Kon-Tiki_,” _Natural History_, 57:264-271, 286-287 (June, 1948).