Original industrial trade vintage catalog for FLINN & DREFFEIN COMPANY, was located at 110 North Franklin Street, Chicago, IL. Consulting engineers and builders of industrial fuel equipment. Specialists in process heating problems. Installations at the Pyrites Company, City of Saginaw, American Rolling Mill Company and American Sheet & Tin Plate Company. Disbound from a large 1936 industrial catalog, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial equipment library.