Original heating trade vintage catalog for BARNES & JONES, INC. was located in Boston, MA. Manufacturers of Systems of Vapor Vacuum Heating. Pictured is the Pacific Mills, Lyman, SC., University of Pennsylvania Dormitories, Japanese Embassy, Washington D.C., and the Park Square Building, Boston, MA. Shown are Type K Modulation Valves, Thermostatic Traps, Float and Thermostatic Blast Traps, Condensators, Proportionator System, Controls and more. Disbound from a large 1938 industrial heating catalog, this unique old twelve page technical brochure would display wonderfully matted and framed. Nice cover graphics. A marvelous addition to your retro heating equipment library. Pages are detached and may contain a small amount of residual glue on edge. Rear cover is chipped.