The Illinois River dominates this portion of Marshall County, creating a complex hydrologic landscape where the main channel is flanked by significant backwaters like Goose Lake, Wightman Lake, and Billsbach Lake. On the eastern bank, the city of Lacon serves as a regional hub, connected by bridge to the village of Sparland to the west. This river corridor has long been the primary driver of development in the area, shaping the layout of local roads and the placement of aviation facilities like the Marshall County Airport.
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This is the sole edition of this map. No revisions or reprints were ever made.
1893 · Lacon
USGS Topo · 1:62,500
1893 · Metamora
USGS Topo · 1:62,500
1893 · Dunlap
USGS Topo · 1:62,500
1898 · Dunlap
USGS Topo · 1:62,500
1932 · Dunlap
USGS Topo · 1:62,500
1933 · Dunlap
USGS Topo · 1:62,500
1933 · Lacon
USGS Topo · 1:62,500
1933 · Camp Grove
USGS Topo · 1:48,000
1937 · Metamora
USGS Topo · 1:62,500
1937 · Dunlap
USGS Topo · 1:62,500