Erie Extension Canal. Route of travel and trade, Pittsburgh to Great Lakes, 1840-1871. Important to the western Pennsylvania iron industry before the rise of the railroads. The only remaining canal lock still stands in Sharpsville. PA 18 & 518 (Lamar Rd.), Lamonts Corners, Sharpsville, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap
