Original heating trade vintage catalog for MINNEAPOLIS-HONEYWELL REGULATOR COMPANY, was located in Minneapolis, MN. Control Systems. Manufacturers of Automatic Control for Heating, Ventilating and Air Conditioning. Used in schools, homes, hospitals, commercial building, theaters, factories, office buildings. Summer Air Conditioning, All Year Systems, Commercial Space Heating, Unit Ventilators and Zone Control. Disbound from a large 1938 industrial heating catalog, this unique old twelve page technical specifications 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.