Original door trade vintage catalog for METAL CLAD DOORS, INC. was located at 675 Concord Avenue, Cambridge, MA. Manufacturers of Metcla Door, Frame, Trim and Entrances, Tin Clad Fire Doors and Shutters, Metal Toilet Partitions and Specialties. Disbound from a large 1938 construction materials book, this unique one page technical specification brochure would display wonderfully matted and framed. A marvelous addition to your retro architectural design and engineering library.