Sean's Ohio Railways Interactive Map kmz Deluxe is a collection of all of  Sean's Google Earth Ohio Railway kmz maps as a single file at a greatly reduced price from buying separately.

This is a combination of four years of research and GIS work. 

Includes:
Cincinnati Inclines
Cincinnati Subway
former Railways of South Western Ohio
Ohio Abandoned & Interurban Rail Lines 
Ohio's active railways

This is a KMZ of the former Cincinnati Inclines. It shows their locations and has clickable photo icons showing pictures of the inclines.

Google Earth KMZ of the unfinished Cincinnati Subway route. Both underground and above-ground.

Interactive Google Earth KMZ of former Railways of South Western Ohio. Includes Former railways, Cincinnati Streetcar, Cablecar, and  Interurban traction lines. includes many station locations and links to photos of many stations in Clermont County.

Interactive Google Earth kmz map of Ohio's active railways

Ohio Abandoned & Interurban Rail Lines Google Earth KMZ.