
Sheldon and Iroquois anchor this mid-1960s survey of eastern Iroquois County, where the Illinois prairie meets the Indiana state line at Effner. The landscape is defined by an extensive drainage network, including the meandering Iroquois River and numerous engineered waterways like Concord Ditch and Bonham Ditch. This era shows a robust rail infrastructure crossing the region, with the New York Central and Toledo Peoria and Western intersecting at the Sheldon town site, while the Chicago Milwaukee St Paul and Pacific runs north toward Beaver Creek.
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1935 · Watseka
USGS Topo · 1:48,000
1938 · Milford
USGS Topo · 1:48,000
1939 · Watseka
USGS Topo · 1:62,500
1944 · Milford
USGS Topo · 1:62,500
1953 · Danville
USGS Topo · 1:250,000
1955 · Danville
USGS Topo · 1:250,000
1956 · Danville
USGS Topo · 1:250,000
1961 · Kentland
USGS Topo · 1:24,000
1961 · Morocco
USGS Topo · 1:24,000
1962 · Earl Park
USGS Topo · 1:24,000