Original roofing trade vintage catalog for KOPPERS COMPANY, (Tar and Chemical Division) was located in Pittsburgh, PA. Manufacturers of Built-Up Roofing, Waterproofing, Dampproofing and Flashing. Koppers Specifications. Don Graf Data Sheets, Roofing Specifications. Insulation, Dampproffing. Unbound from a large 1938 architectural catalog, this unique old thirty-six page technical specifications brochure would display beautifully matted and framed. Nice cover graphics. A fantastic addition to your retro roofing construction library. Pages are detached and contain a small amount of residual glue on edge.