The Illinois River serves as the dominant geographical divide in this Illinois river valley region, separating Calhoun and Greene Counties. The landscape transitions from the flat alluvial plains of the river bottom, where Fairbanks Ranch and Cooke Ranch are situated, to the high bluffs and deeply cut hollows of the eastern bank. These geological features, including Robley Hollow, Eldred Hollow, and Bushnell Hollow, create a complex terrain that historically dictated the placement of settlements and transport routes.
63 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.
1924 · Roodhouse
USGS Topo · 1:62,500
1926 · Roodhouse
USGS Topo · 1:62,500
1930 · Pearl
USGS Topo · 1:62,500
1930 · Hardin
USGS Topo · 1:62,500
1930 · Jerseyville
USGS Topo · 1:62,500
1933 · Jerseyville
USGS Topo · 1:62,500
1934 · Hardin
USGS Topo · 1:62,500
1938 · Hardin
USGS Topo · 1:62,500
1948 · Quincy
USGS Topo · 1:250,000
1950 · Pearl
USGS Topo · 1:62,500