The Sangamon River carves a winding path along the boundary of Mason and Cass counties, defining a landscape of wetlands and fertile Illinois bottomlands. The northern portion of the region is characterized by numerous oxbows and sloughs, including Anderson Slough, Mud Slough, and McHenry Slough, alongside small bodies of water like Fish Lake and Bowles Lake. These riparian features contrast with the higher ground to the south, where the small settlement of Newmansville is located.
69 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1909 · Tallula
USGS Topo · 1:62,500
1930 · Chandlerville
USGS Topo · 1:62,500
1932 · Chandlerville
USGS Topo · 1:62,500
1932 · Virginia
USGS Topo · 1:62,500
1933 · Petersburg
USGS Topo · 1:62,500
1936 · Virginia
USGS Topo · 1:62,500
1938 · Petersburg
USGS Topo · 1:62,500
1940 · Tallula
USGS Topo · 1:62,500
1948 · Quincy
USGS Topo · 1:250,000
1956 · Quincy
USGS Topo · 1:250,000