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The Walworth County Plat Map of 1857 is the oldest and one of the most frequently used map in the University of Wisconsin–Whitewater Archives collection. The 1857 Walworth County Plat map is frequently consulted by students, local historians and genealogists researching the area. This digitized and interactive map allows users to click a township within Walworth County and view the database results for all residents and properties within that township, as documented in 1857. 10 color village maps and 12 color illustrations of houses and structures border the map. Walworth County is the only perfectly square county in Wisconsin and contains 16 townships.