Bright and detailed geological maps within Michigan, providing locations of the various time periods of the land primarily between the Archean and the Algonkian and provides lines for elevations. Lakes Michigamme, Teal, Goose, Superior and several smaller lakes represented. House Documents Vol. 54, 54th Congress, No. 218, Part 2 of the U.S. Geological Survey directed by Charles D. Walcott. Printed by Julius Bien & Co., Lithographers.