Original roofing trade vintage catalog for THE R. C. MAHON COMPANY. Main office was located in Detroit, MI. Manufacturers of Steel Roof Deck. A roof suited to practically any type of building calling for either flat, pitched or arched roof construction. Deck plates can be furnished curved to fit arched roofs, minimum radius 36 ft. They are furnished in 18 and 20 gage, in special tight-coated galvanized copper bearing steel and requires no painting or maintenance. Numerous images, illustrations, specification, engineering data and 20 details for applications are shown. Unbound from a large 1931 architectural catalog, this unique old fourteen page technical brochure would display beautifully matted and framed. Nice cover graphics. A marvelous addition to your retro roofing construction library. Pages are detached and contain a small amount of residual glue on edge.