Original flooring trade vintage catalog for THE R. C. MAHON COMPANY, was located in Detroit, MI. Manufacturers of Permanent Steel Floor Forms. Permanent interlocking form, for every type of commercial building. Used on roof decks. rolling steel doors, industrial equipment, blowpipe & exhaust systems, spray booths and syphon stack exhaust systems. Disbound from a large 1931 floor materials catalog, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro flooring construction library. Slight damp stain on outer edge.