The stone age in North America, vol. 2 of 2

by Warren K. Moorehead

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Barbour, E. H. Records of the Past, 1907, p. 40. Nebraska. 1907.

Mead, C. W. Peruvian Mummies, p. 20. 1907.

Hrdlička. A. Bulletin of the Bureau of Ethnology, 33, pp. 9 ff. A general discussion. 1907.

Sinclair, W. J. Publications of the University of California, vol. 7, 2, p. 109. California. 1908.

Wright, F. B. Records of the Past, 1908, p. 167. 1908.

Spades.

Rau, C. Report of the Smithsonian Institution, 1863, p. 379. “Agricultural Implements.” 1863.