Note 22 — Chapter I
Reading edition
W. H. Canfield’s Sketches of Sauk County, Wisconsin; Foster’s Pre-Historic Races, p. 101. On the copper remains of the Mound-builders, see Pre-Historic Wisconsin, by Prof. James D. Butler, LL.D., annual address before the State Historical Society of Wisconsin, Feb. 18, 1876. Wisconsin Hist. Col., vol. vii. Privately printed.