
Grinnell serves as the focal point for this southern extension into the rolling agricultural lands of Poweshiek County. The landscape is defined by the headwaters and drainage patterns of the N English River, which meanders through the southern half of the quadrangle alongside English Cr and Middle Buck Cr. In the north, the campus of Grinnell College sits at the edge of the urban grid, while Grinnell Regional Airport and several historic cemeteries mark the transition from town to rural acreage.
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1954 · Des Moines
USGS Topo · 1:250,000
1956 · Des Moines
USGS Topo · 1:250,000
1957 · Des Moines
USGS Topo · 1:250,000
1969 · Des Moines
USGS Topo · 1:250,000
1979 · Montezuma
USGS Topo · 1:24,000
1979 · Searsboro
USGS Topo · 1:24,000
1979 · Grinnell South
USGS Topo · 1:24,000
1979 · Malcom
USGS Topo · 1:24,000
1980 · Newburg
USGS Topo · 1:24,000
1980 · Sully
USGS Topo · 1:24,000