"Relief shown by 20-foot contours. Colored geologic map shows railroads, roads, trails, settlements, swamps, streams, lakes, rock types, and outcrops. Geologic cross sections included. Full printed color. Bound in original brown cloth covered boards with ""United States Geological Survey, Charles D. Walcott, Director. Altas To Accompany Monograph XXVIII On The Marquette Iron-Bearing District Of Michigan. Van Hise, Bayley, Smyth"" stamped in gilt."