Peabody, C. Papers of the Peabody Museum, vol. 3, 2, p. 50. Mississippi. 1904.
Smith, H. I. Bulletin of the American Museum of Natural History, 1904, p. 197. Washington, State. 1904.
Dixon, R. B. Bulletin of the American Museum of Natural History, vol. 17, pt. 3, p. 140. California. 1905.
Sinclair, W, J. Publications of the University of California, vol. 2, I, p. 12. Potter Creek Cave. 1904–07.
Wintemberg, W. J. Records of the Past, 1905, p. 271. Attiwandarons. 1905.
Gesner, A. T. Records of the Past, 1905, p. 366. Mandans. 1905.
Will, G. F., and Spinden, H. J. Papers of the Peabody Museum, vol. 3, pt. 4, p. 172. Mandans. 1906.
Gordon, G. B. Transactions of the University of Pennsylvania, vol. 2, I, p. 103. Ohio. 1906.
Merriam, J. C. American Anthropologist, vol. 8, n. s., pp. 224. Caves of California. 1906.
Putnam, F. W. American Anthropologist, vol. 8, n. s., pp. 229 ff. Caves of California. 1906.