English versus American Bridges
- Discussion on the merits of English and American iron bridges. Published in the 1874 edition of the Railway Gazette.
- http://quod.lib.umich.edu/cgi/t/text/pageviewer-idx?c=moa;cc=moa;rgn=full%20text;idno=AJR3197.0001.001;didno=AJR3197.0001.001;view=image;seq=00000001

A Treatise on Bracing With its Application to Bridges and Other Structures of Wood or Iron
- Full text of Bow's 1874 publication.
- http://quod.lib.umich.edu/cgi/t/text/pageviewer-idx?c=moa;cc=moa;rgn=full%20text;idno=AJR3453.0001.001;didno=AJR3453.0001.001;view=image;seq=00000001

Instructions on Modern American Bridge Building
- Full text of George Tower's illustrated book first published in 1874.
- http://quod.lib.umich.edu/cgi/t/text/pageviewer-idx?c=moa;cc=moa;rgn=full%20text;idno=AGW8534.0001.001;didno=AGW8534.0001.001;view=image;seq=00000005

Historical Development of Iron and Steel in Bridges
- Reviews the development of steel bridge construction, demonstrating how improvements in methods and understanding of structural behaviour have enabled greater efficiency and longer spans. Includes illustrations.
- http://www.kuleuven.ac.be/bwk/materials/Teaching/master/wg01b/l0440.htm

Bridge Signs
- Douglas Coulter's collection of bridge maker's plates from wrought iron bridges of Illinois. Also features photographs of covered and iron bridges, and bridge postcards.
- http://www.douglascoulter.com/BridgeSigns/

Context for World Heritage Bridges
- Contextual essay with bridge design and construction dealt with chronologically by material and by type. Includes bibliography and list of potential World Heritage bridges.
- http://www.icomos.org/studies/bridges.htm

Building a Bridge
- The story of the rebuilding of a bridge over the Blyth between Heveningham and Ubbeston in 1794.
- http://www.blythweb.co.uk/blythburgh/1794bridge.htm

China Bridge
- Discover how China's Song dynasty during the eleventh and twelfth centuries used the high arch "rainbow bridge" to solve the problem of spanning a fast-moving river without impeding boat traffic. Nova online.
- http://www.pbs.org/wgbh/nova/lostempires/china/