Washington: Government Printing Office, 1904. 222,iii pp. Plus twenty plates (not paginated), and four folding maps. Original printed front wrapper, rear wrapper lacking. Wrapper loose and chipped. Internally neat, clean, and very good. Item #WRCAM26600
Detailed geological examination of the Black Hills region. Includes many plates of mines and minerals as well as geologic maps of the region indicating the presence of ores.