An Absolutely awesome resource. EVERYTHING ELECTRIC from the early 1900's. Over 1000 pages packed with 1914 state of the art electrical supplies , tools  and equipment of the period. Period prices are listed with every item !!!  At the very least....a cool coffee table conversation piece. Invaluable resource for historic renovators,researchers, designers, contractors, antique dealers specializing in electrical items.   This book is totally packed with everything from all the types of braided wires, cable of all types , Porcelain and glass insulators, conduit supplies, outlets switches, electric boxes, fuses and breakers, residential and commercial applications , household appliances , stoves , phones , fans , Batteries  , meters, testing equipment and tools of the trade. transformers, Utility pole hardware and road crew equipment. So MUCH MORE !!! You wont be disappointed.  thanks for looking and please see our other vintage items and tools offered on Ebay.