CLASS CONSTRUCTION MiuUeippi Wire Claw, 220 Fifth Avenue, New York. Mississippi ... Wickwire Spencer Steel Co., Inc., 41 East 42nd St., New York. Clinton ... Treats with diagrams, portions of doors and windows to which hardware can be applied. Sargent ... International Heater Company, Utira, N. Y. International Economy Blue Front Warm Air Furnace. ... Cover the complete line of Trane Heating Specialties, including Trane Bellows Traps, and Trane Bellows Packless Valves.