Original roofing trade vintage catalog for H. H. ROBERTSON COMPANY. Main office was located in Pittsburgh, PA. Manufacturers of protected steel roof decks V-Beam, bonded metals. Chart with dimensions, gauges, weights, coverage is provided. Unbound from a large 1933 architectural catalog, this unique old two page technical specifications brochure would display beautifully matted and framed. A fantastic addition to your retro roofing construction library. Pages are detached and may contain a small amount of residual glue. Light damp stain on page edges.