Goddard, P. E. Publications of the University of California, vol. 1, 1, p. 37. Hupa. 1903–04.

West, G. A. Wisconsin Archeologist, vol. 4, nos. 3 and 4. Wisconsin. 1905.

Dixon, R. B. Bulletin of the American Museum of Natural History, vol. 17, pt. 3, p. 138. 1905.

Dorsey, G. A. Publications, 103, Field Museum, p. 76. Cheyenne. 1905.

Berlin, A. F. Proceedings of the Wyoming Historical and Geological Societies, p. 108. A general discussion. 1905.

Montgomery, H. American Anthropologist, vol. 8, n. s., p. 646. Dakota. 1906.

The Archæologist, vol. 2, pp. 228 to 232. 1894.

Ward, H. L. Bulletin of the Wisconsin Natural History Society, April, 1906, p. 9. Wisconsin. 1906.

Herrmann, R. Records of the Past, 1906, p. 237. 1906.

Spinden, H. J. Memoirs of the American Anthropological Association, vol. 2, 3, p. 188. Nez Percé. 1908.