Original electrical trade vintage catalog for SOUTH BEND CURRENT CONTROLLER COMPANY, was located at 1239 North Side Blvd, South Bend, IN. Manufacturers of switches and relays for control of outdoor circuits. Series street lighting circuit control, switches for shunt capacitor circuits, control for airport lighting circuits are shown. R-C-O-C multiple relays use special low resistance non-welding contact materials and rugged mechanical structures to assure positive continuous service in switching the high inrush current to incandescent multiple lighting loads. Disbound from a large 1951 electrical construction materials book, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro electric lighting equipment library.