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Moore, C. B. American Anthropologist, vol. 5, n. s., p. 498. A general discussion. 1903.

Idols.

Atwater, C. Archæologia Americana, p. 210. 1820.

Peet, S. D. American Antiquarian, vol. 14, pp. 197 ff. A general discussion. 1892.

Fewkes, J. W. Smithsonian Miscellaneous Collections, vol. 45, p. 120. West Indies. 1903.

American Anthropologist, vol. 6, n. s., p. 589. Cuba. 1904.

Implements.

Proudfit, S. V. American Antiquarian, vol. 3, p. 277. Missouri River. 1880.

Wilson, C. B. American Antiquarian, vol. 5, p. 181. Mexico. 1883.