
Forest City serves as the primary hub in this portion of Mason County, situated at the intersection of a grid-like road network and a complex system of agricultural water management. The landscape is defined by its drainage history, with numerous engineered waterways like the Mason Tazewell Drainage Ditch and North Quiver Ditch cutting through the terrain to support local farming. These ditches, including the Waldmeier Ditch and McFadden Ditch, illustrate the intensive effort required to manage the water table in this low-lying region.
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This is the sole edition of this map. No revisions or reprints were ever made.
1929 · Manito
USGS Topo · 1:62,500
1932 · Manito
USGS Topo · 1:62,500
1933 · Petersburg
USGS Topo · 1:62,500
1938 · Petersburg
USGS Topo · 1:62,500
1942 · Delavan
USGS Topo · 1:62,500
1948 · Mason City
USGS Topo · 1:62,500
1949 · Mason City
USGS Topo · 1:62,500
1958 · Peoria
USGS Topo · 1:250,000
1961 · Peoria
USGS Topo · 1:250,000
1963 · Peoria
USGS Topo · 1:250,000