
The Sangamon River carves a broad valley through this central Illinois landscape, forming the natural boundary between Mason and Cass Counties. The river's historical path is traced by a complex network of backwaters and sloughs, including Theivaught Slough, Johnson Slough, and numerous oxbow lakes such as Big Lake and Wolf Lake. On the southern terrace of this flood plain, the village of Chandlerville serves as the primary settlement, situated near the confluence of Little Panther Creek.
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1926 · Beardstown
USGS Topo · 1:62,500
1929 · Arenzville
USGS Topo · 1:62,500
1930 · Chandlerville
USGS Topo · 1:62,500
1932 · Arenzville
USGS Topo · 1:62,500
1932 · Chandlerville
USGS Topo · 1:62,500
1932 · Virginia
USGS Topo · 1:62,500
1936 · Virginia
USGS Topo · 1:62,500
1944 · Beardstown
USGS Topo · 1:62,500
1948 · Quincy
USGS Topo · 1:250,000
1956 · Quincy
USGS Topo · 1:250,000