Original roofing trade vintage catalog for GENERAL SHEET METAL WORKS, INC. Main office was located in Bridgeport, CT. Manufacturers of Cibulas puttyless skylights for roofing, short and long spans, ventilators and turrets. Built to take care of practically any condition of installation of any reasonable length of span. No water, no ice, no trouble. New York office was located at 489 Fifth Avenue. William J. Callahan, manager. Unbound from a large 1933 architectural catalog, this unique old five page technical specifications brochure would display beautifully matted and framed. A fantastic addition to your retro roofing construction library. Pages are detached and may contain a small amount of residual glue. Damp stain on page edges, with some bleed through.