Pontoosuc sits near the northern boundary of this survey, overlooking a landscape defined by the drainages that feed into the nearby Mississippi River valley. The terrain is deeply etched by waterways such as Spillman Cr and Opossum Cr, which create a complex network of ridges and ravines between the cultivated upland flats. This rural Hancock County landscape is primarily organized around a rigid grid of country roads, yet the irregular placement of historic burial grounds like Tull Cem and the Little Family Cem suggests older settlement patterns that preceded the modern road system. Further south, the small communities of Colusa and Adrian serve as local hubs for the surrounding agricultural tracts. The inclusion of Rhea RLA Airport reflects the continued integration of private aviation into this traditional farming region.
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This is the sole edition of this map. No revisions or reprints were ever made.
1932 · Lomax
USGS Topo · 1:62,500
1933 · Carthage
USGS Topo · 1:62,500
1936 · Keokuk
USGS Topo · 1:62,500
1936 · Fort Madison
USGS Topo · 1:62,500
1937 · Carthage
USGS Topo · 1:62,500
1937 · Lomax
USGS Topo · 1:62,500
1950 · Keokuk
USGS Topo · 1:62,500
1958 · Burlington
USGS Topo · 1:250,000
1961 · Burlington
USGS Topo · 1:250,000
1963 · Burlington
USGS Topo · 1:250,000