Original 1941 flooring trade vintage catalog for the DRAVO CORPORATION. (Machinery Division). Main office was located in the Dravo Building, Pittsburgh, PA.  

Manufactured by The Tri-Lok Company, of Pittsburgh, PA.

Products include Tri-Lok Open Steel Flooring, in steel, aluminum, wrought iron, brass, etc., made in Rectangular, Diagonal, Super-Safety U-type and Radial designs; Tri-Lok Safety Steps, Tri-Lok Armoring, T-Tri-Lok Self-supporting Heavy Duty Flooring. 

Has product images, illustration, description, application and specifications chart to provide product details.

Unbound from a large rare 1941 Industrial Catalog, this unique old one-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro industry library.