Colorado-Henkle Collection. IDeKNMartin, Ebenezer (Engraver)1 map : col. ; 38 x 45 cm, folded in cover 10 x 5 cmCover title: Map of lead mines.Relief shown pictorially.Includes an area bounded by the Wisconsin, Mississippi, and Rock Rivers.In borders: text.Folder title: Lead mines.Colorado-Henkle Collection. IDeKNJPEGG 4042 .M5H2 1829 .C500327901739015091905730engPublicMap of the United States lead mines on the upper Mississippi RiverMapsUnited StatesUniversity of Michigan