Original concrete trade vintage catalog for DRAVO EQUIPMENT COMPANY. Main office and factory was located at 300 Penn Avenue, Pittsburgh, PA. Manufacturers of American tubular towers and accessories designed for handling material and concrete with or without chuting. Typical three section tower is shown. Used in Palmolive Building in Chicago, Southwestern Bell Telephone Building in Kansas City, Chrysler Building in New York City, Bank of Manhattan Building, and more. This unique 1931 old one page building construction brochure would display beautifully matted and framed. A marvelous addition to your retro engineering library.