"The Forth Bridge". forth-bridges.co.uk. Forth Bridges Forum. 2015. Retrieved 26 March 2017. Opened in 1890, The Forth Bridge is recognised the world over as the most famous of cantilever designs.
networkrail.co.uk
"Forth Bridge". NetworkRail. Network Rail. Archived from the original on 4 July 2015. Retrieved 3 July 2015.