ODNB: Gillian Cookson, ‘Roberts, Richard (1789–1864)’, Oxford Dictionary of National Biography, Oxford University Press, 2004 [http://www.oxforddnb.com/view/article/23770, accessed 29 Oct 2010] Richard Roberts (1789–1864): doi:10.1093/ref:odnb/23770

REF: Smiles, Samuel 1863, Industrial Biography - Iron Workers and Tool Makers, available online at:

http://www.fullbooks.com/Industrial-Biography5.html [accessed 29 October 2010]

WIKI: https://en.wikipedia.org/wiki/Richard_Roberts_(engineer)

VIAF: http://viaf.org/viaf/12554329/