American Anthropologist, vol. 10, n. s., p. 37. Manitoba. 1908.

Argillite.

Abbott, C. C. Archæologia Nova Cæsarea, etc. (Often.)

Arrows.

Van Epps, P. M. American Antiquarian, 1880, p. 57. New York. 1880.

Rau, C. Prehistoric Fishing, pp. 56, 83, and 293. 1884.

Nissley, J. R. American Antiquarian, 1886, p. 301. Ohio and Illinois. 1886.

Smith, H. I. American Antiquarian, 1889, pp. 249 ff. Michigan. 1889.

Murdoch. American Anthropologist, vol. 3, p. 64. Glass Arrows. 1890.

Bourke, J. G. American Anthropologist, vol. 3, p. 56. Apache. 1890.