Shannon City straddles the boundary between Union and Ringgold Counties, serving as the primary hub in this rural Iowa landscape. The township is characterized by the branching headwaters of the E Platte River and the Grand River, which carve subtle drainage patterns across the agricultural fields. The settlement structure is defined by a rigid grid of rural roads, including Ringgold Union St, which marks the county line dividing the northern and southern halves of the quadrangle.
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This is the sole edition of this map. No revisions or reprints were ever made.
1951 · Afton
USGS Topo · 1:62,500
1954 · Omaha
USGS Topo · 1:250,000
1955 · Nebraska City
USGS Topo · 1:250,000
1957 · Nebraska City
USGS Topo · 1:250,000
1957 · Omaha
USGS Topo · 1:250,000
1958 · Omaha
USGS Topo · 1:250,000
1958 · Nebraska City
USGS Topo · 1:250,000
1980 · Creston East
USGS Topo · 1:24,000
1981 · Creston West
USGS Topo · 1:24,000
1981 · Arispe
USGS Topo · 1:24,000