
Avon serves as a central hub in this western Illinois landscape, where the borders of Fulton, Knox, Warren, and McDonough counties converge. The topography is defined by the drainage patterns of Swan Creek and Cedar Creek, which carve through the prairie to create a network of wooded draws and agricultural uplands. This modern survey illustrates the persistent settlement patterns of the region, anchored by established communities like St. Augustine and the remains of Old Prairie City.
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This is the sole edition of this map. No revisions or reprints were ever made.
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