Smith, H. I. Records of the Past, 1905, p. 125. Colorado Valley. 1905.
Bierbower, Mrs. S. Records of the Past, 1905, p. 231. New Mexico. 1905.
Pittier de Fabriga, H. Memoirs of the American Anthropological Association, vol. 1, 5, p. 307. Colombia. 1905–07.
Moorehead, W. K. Bulletin 3, Phillips Academy, Andover, p. 159. A Pictograph on Birch Bark.
Hewett, E. L. Bulletin of the Bureau of Ethnology, 32, p. 11. Southwest. 1906.
Sherwood, C. C. Ohio Archæological and Historical Quarterly, vol. 17, p. 307. 1908.
Emmons, G. V. American Anthropologist, vol. 10, n. s., p. 221. Alaska, 1908.
Pitted Stones.
Holmes, W. H. American Anthropologist, vol. 9, n. s., p. 124. 1907.
Pipes.