Mount Ayr anchors this portion of Newton County, appearing as a compact settlement surrounded by a grid of agricultural land and an intricate drainage system. The landscape is defined by the engineered management of water, with named channels such as Spitler Ditch, Deardurff Ditch, and Battleday Ditch crisscrossing the terrain to feed into the Iroquois River and its tributaries like Hickory Br. These man-made and natural watercourses reflect the region's long-standing reliance on land reclamation for farming.
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This is the sole edition of this map. No revisions or reprints were ever made.
1953 · Chicago
USGS Topo · 1:250,000
1953 · Danville
USGS Topo · 1:250,000
1955 · Danville
USGS Topo · 1:250,000
1956 · Danville
USGS Topo · 1:250,000
1957 · Chicago
USGS Topo · 1:250,000
1961 · Kentland
USGS Topo · 1:24,000
1961 · Mount Ayr
USGS Topo · 1:24,000
1961 · Morocco
USGS Topo · 1:24,000
1962 · Parr
USGS Topo · 1:24,000
1962 · Goodland
USGS Topo · 1:24,000