Carr, L., and Shaler, N. S. Prehistoric Remains of Kentucky, p. 18. 1876.
Nelson, E. W. Report of the Bureau of Ethnology, 18, p. 86. Eskimo. 1896–97.
Laidlaw, G. E. American Antiquarian, vol. 19, pp. 68 ff. Ontario. 1897.
Chisels.
Smith, H. I. Memoirs of the American Museum of Natural History, vol. 4, p. 162. British Columbia. 1903.
Willoughby, C. C. American Anthropologist, vol. 9, p. 77. Virginia. 1907.
Chipped Artifacts.
Smith, H. I. American Anthropologist, vol. 11, p. 359. British Columbia. 1909.
Clay.
Montgomery, H. American Anthropologist, vol. 8, p. 646. Dakota. 1906.