Irwin sits at the convergence of the West Nishnabotna River and Elk Cr in Shelby County, serving as the primary hub of this Iowa agricultural landscape. The township grid is defined by a rigorous network of section-line roads, including Rd M47 and Co Hwy M56, which facilitate movement between the larger settlement of Irwin and the smaller community of Botna to the northeast. Just south of the town center, Oak Hill Cem provides a focal point for genealogical research, situated near the intersection of Front St and Street F24. The drainage patterns of Long Br and other tributaries carve subtle relief into the terrain, reflecting the drainage-driven development of the local farmsteads. This survey preserves the exact placement of rural infrastructure, from the county line transition at Crawford Co Shelby Co to the residential streets of Irwin.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Omaha
USGS Topo · 1:250,000
1957 · Omaha
USGS Topo · 1:250,000
1958 · Omaha
USGS Topo · 1:250,000
1971 · Earling NE
USGS Topo · 1:24,000
1971 · Defiance
USGS Topo · 1:24,000
1978 · Manilla
USGS Topo · 1:24,000
1978 · Irwin
USGS Topo · 1:24,000
1978 · Kimballton
USGS Topo · 1:24,000
1978 · Manning
USGS Topo · 1:24,000
1978 · Harlan
USGS Topo · 1:24,000