Cumming, T.G.: Description of the iron bridges of suspension erected over the strait of Menaï, at Bangor; over the river Conway, in North Wales; and over the river Thames, [...] : also some account of the different bridges of suspension in England and Scotland / with calculations of the strength of malleable iron, founded on exp [...]. London : printed for J. Taylor, at the Architectural Library, M.DCCC.XXVIII. [1828]