
The Iowa River meanders across the central landscape of this 1960s Iowa County survey, defining the industrial and agricultural character of Marengo. The town serves as a significant hub for transport and education, anchored by the Chicago Rock Island and Pacific railroad and facilities like Marengo High Sch and the Iowa Valley Sch. The settlement pattern reflects a stable mid-century community, with the town's grid organized around the Courthouse and Post Office, while essential services like the Hospital and various municipal Sewage Disposal Ponds are situated on the periphery near the riverbanks.
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1888 · Amana
USGS Topo · 1:62,500
1889 · Amana
USGS Topo · 1:62,500
1891 · Oxford
USGS Topo · 1:62,500
1894 · Oxford
USGS Topo · 1:62,500
1899 · Amana
USGS Topo · 1:62,500
1903 · Fairfax
USGS Topo · 1:125,000
1954 · Des Moines
USGS Topo · 1:250,000
1956 · Des Moines
USGS Topo · 1:250,000
1957 · Des Moines
USGS Topo · 1:250,000
1958 · Davenport
USGS Topo · 1:250,000