Crowder, Ian (3 December 2009). "Bridge progress". Gloucestershire Warwickshire Railway. Archived from the original on 15 October 2013. Retrieved 30 October 2014.
Crowder, Ian (3 December 2009). "Bridge progress". Gloucestershire Warwickshire Railway. Archived from the original on 15 October 2013. Retrieved 30 October 2014.