Historic photo of the Miami & Erie Canal between Main and Sycamore

Historic photo of the Miami & Erie Canal, prior to construction of the subway

Historic photo of downtown subway construction

Historic photo of the Plum Street bend of the Miami & Erie Canal

Historic photo of downtown subway construction at the Plum Street bend

A modern view of one of the downtown subway stations

Historic photo of subway construction

Central Parkway railing and subway vents along Colerain Avenue

Close up of the subway vents along Colerain Avenue

Historic photo of the Miami & Erie Canal at Marshall Avenue in Camp Washington

Historic photo of the subway right-of-way in Camp Washington

Historic aerial of Camp Washington showing the subway overpass at Bates Avenue in 1932

Historic photo of the Miami & Erie Canal at Clifton Avenue in 1912

Historic photo of the Clifton Avenue rapid transit station in 1929

Historic photo of the subway overpass at Mitchell Avenue during the 1937 flood

Historic aerial of I-75 construction at Mitchell Avenue

Location of the Miami & Erie Canal in St. Bernard

Historic photo of Vine Street in St. Bernard at Washington Avenue

Historic photo of Vine Street in St. Bernard at Washington Avenue

Historic photo of the B&O Midland crossing the Miami & Erie Canal near St. Bernard in 1924

Subway ROW behind Showcase Cinemas in Bond Hill

Subway ROW behind Showcase Cinemas in Bond Hill

Subway ROW along the east edge of the Showcase Cinemas property in Bond Hill

Subway ROW along the east edge of the Showcase Cinemas property in Bond Hill

Subway ROW behind Showcase Cinemas in Bond Hill

Approach to the west portal of the Forest/Zumbiel tunnel for the never completed subway in Norwood

Historic Photo of the center of Norwood at Smith and Montgomery Road

Historic photo of the rapid transit and B&O Midland underpasses at Montgomery Road in Norwood

West portal of the Forest/Zumbiel tunnel for the never completed subway in Norwood

East portal of the Forest/Zumbiel tunnel for the never completed subway in Norwood

Current view of the east portal of the Forest/Zumbiel subway tunnel

A possible subway tunnel under the old PRR connection to the B&O line in Norwood

Close up of the possible subway tunnel

East portal of the possible subway tunnel

1948 USGS map showing the at-grade subway route in St. Bernard and Bond Hill

1948 USGS map showing the at-grade subway route in Bond Hill