3 vols. (2 wrappers)
Delaware River Bridge: Carswell, Charles. The Building of the Delaware River Bridge. Burlington, N.J., 1926. 4to, orig. pictorial wrappers; edge wear. Photo illus. * American Cable Co. The World's Greatest Suspension Bridge, Philadelphia to Camden. New York, (1926). Oblong 4to, orig. pictorial bds.; modertae wear. Photo plates. * Page Steel and Wire Company. The World's Greatest Suspension Bridge. (Bridgeport), (1926). 8vo, orig. wrappers. Photo illus.