Original heating trade vintage catalog for GENERAL MOTORS SALES CORPORATION, was located in Dayton, OH. Manufacturers of Delco-Frigidaire Air Conditioning System Units. Conditionedairs for Oil or Gas. Equipment available for summer, winter or year round use. Disbound from a large 1938 industrial heating catalog, this unique old four page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro heating equipment library.