Bulletin No. 6 The Iron Ores of Minnesota; Their Geology, Discovery, Development, Qualities and Origin, and Comparison with those of other Iron Districts
Minneapolis: Harrison & Smith, 1891. First edition. Hardcover. 24 x 15.5 cm. Octavo. ix [1] 430pp. Illustrated with 44 plates, two of which are folding and housed in the front pocket, as well as a very large color folding geological map of Minnesota housed in rear pocket. The map is..... More