70/2524 [Civil engineering. Bridges]. Humber, W. A Complete Treatise on cast and Wrought Iron Bridge Construction, including Iron Foundations (...). Vol. II. Plates. London, E. & F.N. Spon, 1861, plate vol. only, title-p., index and 80 double-p. (2x fold.) lithogr. plates, contemp. giltlettered hmor., folio.
- Without the text vol. Some foxing in margins (sl. worse on versos and at the end). Binding worn/ dam. along extremities.