
The North Fork Maquoketa River carves a deep valley through the eastern edge of this mid-1960s landscape, serving as a focal point for the settlements of Dyersville, Rockville, and Worthington. The terrain is defined by a dense network of watercourses including Plum Creek, Silver Creek, and Bear Creek, which reveal the area's complex drainage pattern and rich agricultural layout. The local economy and transport of the era are clearly marked by three distinct rail lines—the Illinois Central, the Chicago Great Western, and the Chicago Milwaukee St Paul and Pacific.
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This is the sole edition of this map. No revisions or reprints were ever made.
1900 · Anamosa
USGS Topo · 1:125,000
1902 · Elkader
USGS Topo · 1:125,000
1959 · Dubuque
USGS Topo · 1:250,000
1961 · Dubuque
USGS Topo · 1:250,000
1962 · Dubuque
USGS Topo · 1:250,000
1962 · New Vienna
USGS Topo · 1:24,000
1962 · Petersburg
USGS Topo · 1:24,000
1965 · Dyersville East
USGS Topo · 1:24,000
1965 · Greeley
USGS Topo · 1:24,000
1966 · Hopkinton East
USGS Topo · 1:24,000