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A HISTORY OF THE ELECTRICAL PORCELAIN INDUSTRY IN THE UNITED STATES. Jack H. Tod. 1977. Paperback. 8½" x 11". 180 pages. History of companies, patent information. Electrical porcelain....tubes, knobs, cleats, spools, etc. Lots of information. $20.00 postpaid. Personal check, postal money order, or PayPal (gift option) |