The iron ores of Minnesota : their geology, discovery, development, qualities, and origin, and comparison with those of other iron districts - Winchell, N. H. (Newton Horace), 1839-1914.; Winchell, Horace V. (Horace Vaughn), 1865-1923. (Minneapolis : Harrison & Smith, state printers, 1891)
Maps and plan in pockets.
"Bibliography of the origin of iron ores": p. [258]-334.
Keywords: Iron ores -- Minnesota; Iron mines and mining -- Minnesota -- History; Iron ores -- Bibliography