[31]Carl Sauer, “Geographic Sketch of Early Man in America,” Geographical Review, 34:538 (1944).
[32]M. C. Burkitt, The Old Stone Age, 86-87 (1933).
REFERENCES AS TO ILLUSTRATIONS
(In the main, the earliest instances of publication)
[PAGE 13]. Edward Brerewood, Enquiries Touching the Diversity of Languages, and Religions, Through the Chief Parts of the World (1622—1st ed., 1614).
[PAGE 18]. W. A. Johnston, “Quaternary Geology of North America in Relation to the Migration of Man,” in The American Aborigines, ed. D. Jenness (1933).
[PAGE 19]. Carl Sauer, “Geographic Sketch of Early Man in America,” Geographical Review, Vol. 34 (1944).
PAGES [26] and [27]. Harold S. Gladwin, Excavations at Snaketown: II, Comparisons and Theories (1937), and Ernst Antevs, personal communication.
[PAGE 44]. Arthur Holmes, Principles of Physical Geology (1945). Earnest A. Hooton, Up from the Ape (1931).
[PAGE 48]. Richard F. Flint, Glacial Geology and the Pleistocene Epoch (1947). Ernst Antevs, The Last Glaciation (American Geographical Society Research Series, no. 17, 1928). Richard F. Flint and H. G. Dorsey, “Glaciation of Siberia,” Bulletin, Geological Society of America, Vol. 56 (1945). R. A. Daly, The Changing World of the Ice Age (1934).