A wonderful old catalog for Diamond H Switches Receptacles and Appliances Catalog F 48 pages Includes light switches for homes and businesses like motels. Also switches for autos, guages, no-voltage release remote control switch, relay control, door bolt control, feed throttle and pendant, heater, surface and electrical diagrams. I cannot find a date for this catalog but I would think early 1900's Very good condition with a top left corner missing and some light age wear. Catalogs like this are hard to find espessially in this good condition.