
Cairo occupies the critical confluence where the Ohio River meets the Mississippi River, a landscape defined by massive levees and industrial riverfront infrastructure. In the 1990s, this southern tip of Illinois reveals a dense concentration of historical and civic sites, including the Mound City National Cem and the extensive grid of Mound City. The geography here is dominated by the flood-prone Barlow Bottoms and a network of sloughs and lakes like Grassy Lake and Minor Lake that reflect the area's ancient river channels.
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1931 · Cairo
USGS Topo · 1:62,500
1933 · Cairo
USGS Topo · 1:62,500
1934 · Thebes
USGS Topo · 1:62,500
1939 · Wickliffe
USGS Topo · 1:62,500
1939 · Charleston
USGS Topo · 1:62,500
1939 · Cairo
USGS Topo · 1:62,500
1939 · Thebes
USGS Topo · 1:62,500
1949 · Paducah
USGS Topo · 1:250,000
1950 · Paducah
USGS Topo · 1:250,000
1951 · Wickliffe
USGS Topo · 1:24,000