1. Post route map of the states of Michigan and Wisconsin : with adjacent parts of Ohio, Indiana, Illinois, Iowa, and Minnesota Maps University Of Minnesota Public content 1871. Nicholson, W. L. Prime meridian: Washington.; Shows railroad lines.; "Drawn by C.H. Poole. Engraved by D. McClelland."; Includes "General statistics," "Explanation ... Post Office Dept. (Washington, D.C).