Original elevator trade vintage catalog for JOHN A. ROEBLING'S SONS COMPANY, was located in Trenton, NJ. Manufacturers of Wire Rope, Slings, and Fittings. Suspension Bridge Cable, Galvanized Steel Strand, Hoisting Attachments, Thimbles and Sheave Blocks. Disbound from a large 1931 elevator construction materials book, this unique old seven page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro elevator equipment library.