Original door trade vintage catalog for THE COMPOUND AND PYRONO DOOR COMPANY, was located at 650 Arlington Place, Chicago, IL. Manufacturers of Fireproof Wood Doors, Asbestos Interlined. Used in stairways, elevators, corridors in office buildings, hotels, hospitals, apartments and schools. Trimount Sound-Insulated, and Key-Veneered used at National Broadcasting Company Studios, Crosley Radio, Lakeside Hospital, Johns Hopkins, Dupont Residence and US Treasury Building. Disbound from a large 1941 construction materials book, this unique old one page technical specifications brochure would display beautifully matted and framed. A marvelous addition to your retro industrial engineering library. Slight damp stain on corner of page.