Original industrial trade vintage catalog for THE DUST RECOVERING & CONVEYING COMPANY. Main office and factory was located at East 116 Street and Harvard Avenue, Cleveland, OH. Dracco Systems. Engineers and Manufacturers of Pneumatic Conveying and Dust Collecting Systems. Removes solids and dust of all kinds and degrees of fineness from air or gas. Used at Acheson Harden Company, American Smelting & Refining, Detroit Edison, Ford Motor Company, National Lead, American Rolling Mill, Grasselli Chemical, Pittsburgh Plate Glass. 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 equipment library. Slight damp stain on outer edge.