Mill Creek and the southern reaches of the Shawnee National Forest define this Illinois landscape where the Ozark Plateau foothills meet the Mississippi River floodplain. The area is characterized by a dense network of hollows and ridges, such as Happy Hollow, Dongola Hollow, and Italian Hill, which create a complex drainage pattern into waterways like Sexton Cr and Sandy Cr. The settlement pattern reflects the ruggedness of the terrain, with small communities like Elco and Tatumville situated along the rail corridors that traverse the valleys.
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1920 · Jonesboro
USGS Topo · 1:62,500
1920 · Dongola
USGS Topo · 1:62,500
1923 · Dongola
USGS Topo · 1:62,500
1923 · Jonesboro
USGS Topo · 1:62,500
1931 · Cairo
USGS Topo · 1:62,500
1933 · Cairo
USGS Topo · 1:62,500
1934 · Thebes
USGS Topo · 1:62,500
1939 · Cairo
USGS Topo · 1:62,500
1939 · Thebes
USGS Topo · 1:62,500
1947 · Jonesboro
USGS Topo · 1:62,500