County plat books or atlases contain descriptions of land owners and landmarks. Utilizing the Public Land Survey System each map is divided into township, range, and sections. Identified on the maps are the owners of these divisions of land and sometimes include landmarks such as churches, cemeteries, and schools. Many plat books contain a brief county history and a directory of county residents.
The online collection contains plat maps of Missouri counties published between 1875 and 1917. Additional plat maps are available for research at the State Historical Society of Missouri.
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