Extent: 1 map Abstract: Digital scan of a map of the Upper Peninsula of Michigan and Lake Superior, from an 1873 atlas. Shows counties, survey townships, cities and towns, roads, railroads, and water features. Notes: Relief shown by hachures. From: Beers, F. W. (Frederick W.). Atlas of Calhoun Co. Michigan : from recent and actual surveys and records / under the superintendence of F.W. Beers. New York : F.W. Beers & Co., 1873. Prime meridians: Greenwich and Washington. Scale not determined