Original roofing trade vintage catalog for KOPPERS PRODUCTS COMPANY, was located in Pittsburgh, PA. Manufacturers of roofing, flashing, waterproofing, dampproffing, bituminous base paints and creosote for wood preservation. Why flat roofs should be built on industrial buildings, built of coal tar pitch and felt. Unbound from a large 1936 architectural catalog, this unique old eight page technical specifications brochure would display beautifully matted and framed. A wonderful addition to your retro roofing construction library. Pages are detached and may contain a small amount of residual glue on edge.