Black and white photographic postcard of a bird's eye view of the Welland Canal, Humberstone (now part of Port Colborne) in distance, Port Colborne, c. 1912.
Colour photograph of the railroad Bridge 15 over the Welland Canal between Ontario Road and Lincoln Street, c. 1983. The bridge used to carry the main line of the Canada Southern Railway over the canal. Photo taken by Ross Beard.
Black and white photographic postcard showing Bridge 17 lifted to allow a ship to pass, at Dain City, June 1, 1930. Bridge 17 carried the Wabash Railway line over the canal.
Black and white photographic print showing Canada's Southern Railway Bridge over the second Welland Canal, July 26, 1872. The bridge was completed in 1872 and was in operation by 1873.
Black and white photogravure from the book "Niagara Falls Photo-Gravures from Recent Negatives of the Albertype Company, New York" by A. Wittemann, captioned “Cantilever Bridge," c. 1890-1892.