Marengo anchors the southern edge of this McHenry County landscape, where the town's grid meets the branching hydrology of the region. The area is defined by the convergence of the N Br Kishwaukee River and its southern and main branches, creating a network of drainage across the northern Illinois prairie. Rural life is reflected in the placement of small community markers like the South Dunham Cem and the Pioneer Cem, while the presence of Hilbert Airport and Aerogrange Airport indicates a reliance on small-scale aviation within this agricultural corridor.
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This is the sole edition of this map. No revisions or reprints were ever made.
1925 · Elgin
USGS Topo · 1:62,500
1926 · Mc Henry
USGS Topo · 1:62,500
1932 · Harvard
USGS Topo · 1:48,000
1937 · Harvard
USGS Topo · 1:62,500
1938 · Genoa
USGS Topo · 1:62,500
1940 · Elgin
USGS Topo · 1:62,500
1944 · McHenry
USGS Topo · 1:62,500
1954 · Rockford
USGS Topo · 1:250,000
1955 · Rockford
USGS Topo · 1:250,000
1958 · Rockford
USGS Topo · 1:250,000