McGuire, J. D. American Anthropologist, vol. 5, pp. 165 ff. A general discussion. 1892.
Holmes, W. H. American Anthropologist, vol. 6, pp. 1 ff. A general discussion. 1893.
Fowke, G. Ohio Archæological and Historical Quarterly, vol. 2, p. 514. 1893.
Mercer, H. C. American Naturalist, 1893, pp. 962 ff. 1893.
Berlin, A. F. The Archæologist, vol. 1, p. 53. Indiana. 1893.
Holmes, W. H. Report of the Bureau of Ethnology, 15, pp. 3 ff. Potomac-Chesapeake Province. 1893–94.
Newton, W. S. The Archæologist, vol. 2, p. 192. 1894.
Fowke, G. The Archæologist, vol. 2, p. 328. 1894.
Holmes, W. H. International Congress of Anthropology, pp. 120 ff. 1894.
Fowke, G. The Archæologist, vol. 3, p. 197. 1895.