Holmes, W. H. American Anthropologist, vol. 7, n. s., p. 205. 1905.
Adzes.
Crosby, H. A. Wisconsin Archæologist, July, 1903, pp. 91 ff. “The Triangular Stone Adze.” 1903.
Smith, H. I. American Anthropologist, vol. 8, n. s., pp. 298 ff. 1906.
Willoughby, C. C. American Anthropologist, vol. 9, n. s., pp. 296 ff. “New England.” 1907.
Agricultural Implements.
Rau, C. Arch. für Anthropologie, vol. 14, pp. 1–9. A general paper. 1870.
Williams, F. H. American Archæologist, July, 1898, pp. 177–8. 1898.
Willoughby, C. C. American Anthropologist, vol. 8, n. s., pp. 129–130. “New England.” 1906.
Altars.