
Ohio Northern University and its College of Engineering anchor the southern landscape of this Hardin County survey, highlighting the academic character of Ada during the early 1960s. The town's grid is intersected by the prominent Pennsylvania railroad line, while localized industry is evidenced by several quarries and a quarry located just east of the village center.
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2 editions found
1905 · Arlington
USGS Topo · 1:62,500
1907 · Bluffton
USGS Topo · 1:62,500
1907 · Arlington
USGS Topo · 1:24,000
1913 · Alger
USGS Topo · 1:48,000
1915 · Alger
USGS Topo · 1:62,500
1915 · Kenton
USGS Topo · 1:62,500
1943 · Alger
USGS Topo · 1:62,500
1944 · Kenton
USGS Topo · 1:62,500
1950 · Marion
USGS Topo · 1:250,000
1960 · Bluffton
USGS Topo · 1:24,000