Original store front trade vintage catalog for AMERICAN MAST & SPAR CORPORATION. Main office and factory was located on 149th Street and East River, New York City, NY. Manufacturers of Metal Flag Poles, Yacht Masts, Spars, Booms and Derrick Masts. Tapered steel pole, Umbrella revolving ball bearing Truck No. 30, Topmast flag pole with Yardarm. Manufactured and erected all the flag poles on the Rockefeller Center Buildings in New York City. Unbound from a large 1938 architectural catalog, this unique old one page technical brochure would display fantastic matted and framed. Nice graphics. A fabulous addition to your retro construction library.