Original heating trade vintage catalog for THE KIRK & BLUM MANUFACTURING COMPANY, was located at 2885 Spring Grove Avenue, Cincinnati, OH. Manufacturers of Suction & Blower Systems. Chainless, Airtight Plenum, Fittings, One-Piece Elbow. Used for Collecting shavings and sawdust, grinding, grain elevator and mill dust, textile lint, paint spray, fume and heat removal, ventilating and air conditioning. Cooling, drying and heat reclamation for glass and ceramic plants. Shown is waste removal in Rudolph Wurlitzer Company and RCA-Victor Company. Disbound from a large 1931 industrial catalog, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial ventilating equipment library. Slight damp stain on outer edge.