
Mason City anchors the northern reaches of this Cerro Gordo County landscape, where the transition from urban outskirts to agricultural grid is defined by a dense network of sectional roads. The topography is marked by several drainage systems, including Mason Cr and Cheslea Cr, which carve subtle valleys through the farmland. Small rural settlements like Hanford, Hurley, and Cameron remain as distinct nodes within the township system, often centered at key intersections such as where Partridge Ave meets local county roads.
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1954 · Mason City
USGS Topo · 1:250,000
1954 · Waterloo
USGS Topo · 1:250,000
1955 · Waterloo
USGS Topo · 1:250,000
1957 · Mason City
USGS Topo · 1:250,000
1958 · Mason City
USGS Topo · 1:250,000
1959 · Mason City
USGS Topo · 1:24,000
1959 · Mason City
USGS Topo · 1:62,500
1959 · Nora Springs
USGS Topo · 1:24,000
1959 · Mason City SE
USGS Topo · 1:24,000
1959 · Hanford
USGS Topo · 1:24,000