Original roofing trade vintage catalog for NELSON BROS, INC. Main office was located at 3617 South Morgan Street, Chicago, IL. Manufacturers of prefabricated roof curbs, ventilating skylights. Advantages and applications discussed. Specifications provided. Unbound from a large 1958 architectural catalog, this unique old four page technical brochure would display beautifully matted and framed. Nice cover graphics. A wonderful addition to your retro roofing construction library. Pages are detached and contain a small amount of residual glue on edge.