The Lake Erie, Franklin and Clarion Railroad ran from Summerville to Clarion, in Pennsylvania. It was comprised of several smaller railroads:
- Pennsylvania Northern
- Pennsylvania Southern
- Pittsburgh, Clarion and Franklin
- Pittsburgh, Summerville, and Clarion
Coal traffic was the primary revenue for the line, but it also served a number of industries in the area as well. However, as coal mines shuttered their doors, freight service along the line dwindled, so much so that it ultimately sealed its fate; it was formally abandoned in 1993.