Note 11 — Chapter III · Indian Reservations.—Lake Superior.—Beavers and their works.—The Forest.—Houghton.—Ancient Indian mining pits and trenches.—An Indian battle ground.—The Glacial Drift.—Note regarding the Dauphin.
Reading edition
See “Report on the Geology and Topography of a portion of the Lake Superior Land District,” by I. W. Foster and I. D. Whitney. Washington, 1850.