Original electrical trade vintage catalog for INTERNATIONAL RESISTANCE COMPANY. Main office and factory was located at 401 North Broad Street, Philadelphia, PA. Manufacturers of volume controls, Potentiometers, wire wound, all metal rheostats, more types in more sizes and for more applications than any other manufacturer in the world. Disbound from a large 1943 electronics materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electronic equipment library.