
Spring Valley serves as the primary hub of this mid-1960s landscape, situated at the crossroads of significant rail activity where the Chicago Great Western and the Chicago Milwaukee St Paul and Pacific rail lines meet. This junction emphasizes the town's importance as a regional transportation center during this era. The surrounding rural townships, including Frankford, Bennington, and Bloomfield, are defined by a high density of small-scale infrastructure, from the Townhall in Bennington to several scattered Gravel Pits and a Strip Mine.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Mason City
USGS Topo · 1:250,000
1955 · Stewartville
USGS Topo · 1:62,500
1955 · High Forest
USGS Topo · 1:62,500
1957 · Mason City
USGS Topo · 1:250,000
1958 · Mason City
USGS Topo · 1:250,000
1965 · Le Roy
USGS Topo · 1:24,000
1965 · Wykoff
USGS Topo · 1:24,000
1965 · Grand Meadow
USGS Topo · 1:24,000
1965 · Ostrander
USGS Topo · 1:24,000
1965 · Cherry Grove
USGS Topo · 1:24,000