Original electrical trade vintage catalog for AMERICAN TRANSFORMER COMPANY. Main office and factory was located at 178 Emmet Street, Newark, NJ. Manufacturers of Power, distribution, abestol and air cooled transformers, rectifiers, TH transtat voltage regulators. Disbound from a large 1942 architect construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical equipment library. Contains a small amount of residual glue on edge.