Map of the states of Michigan and Wisconsin: embracing a great part of Iowa and Illinois, and the whole mineral region with a chart of the lakes. exhibiting the sections, the geological formations, and the general topography; compiled from the state topographical department, from the latest United States surveys, and from other authentic sources, by John Farmer of Detroit.; Alternate title: Geological map of the mineral region: from the official plate of the United States surveys and chart of Lake Superior reduced from the survey and chart of Lieut. Bayfield of the R.N. Maps University Of Michigan