Cooksville and the surrounding agricultural landscape of McLean County are defined by a network of drainage creeks and the meandering Mackinaw River. This central Illinois prairie region shows a highly organized grid of county roads, such as Co RD 2150 N and E 1800 North Rd, which facilitate the region's deep connection to aviation and farming. A notable modern landmark is the Schertz Aerial Service - Cooksville Airport, reflecting the importance of aerial application in local agriculture. Several historic burial grounds, including Wiley Cem and Blue Mound Cem, are situated along these rural routes, providing primary points of interest for genealogists tracing local families. The water system, fed by Patton Cr, Henline Cr, and Little Crooked Cr, dictates the few breaks in the otherwise straight-edged sectional survey lines of the settlement near Pleasant Hill.
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1926 · Normal
USGS Topo · 1:62,500
1930 · Normal
USGS Topo · 1:62,500
1951 · Le Roy
USGS Topo · 1:62,500
1952 · Arrowsmith
USGS Topo · 1:62,500
1957 · Colfax
USGS Topo · 1:62,500
1958 · Peoria
USGS Topo · 1:250,000
1961 · Peoria
USGS Topo · 1:250,000
1963 · Peoria
USGS Topo · 1:250,000
1981 · Holder
USGS Topo · 1:24,000
1981 · Lexington
USGS Topo · 1:24,000