Original electrical trade vintage catalog for ELECTRO DYNAMIC COMPANY, was located in Bayonne, NJ. Manufacturers of Alternating Current and Direct Current Motors. A-C Squirrel Cage Motors, Slip Ring Motors, Motor-Generator Sets, Interpole D-C and Marine Watertight. Disbound from a large 1931 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library. Slight damp stain on outer edge.