more old books,
i've got a 1901 nec.it's 3"x5 1/2" and all of 80 pages.got the 1902 list of electrical fittings thats a supplement to the 1901 nec that is all of 23 pages and the same size.i guess there wasn't much of a selection of parts approved by underwriters national electric asociation back then.many items have only one or two manufacturers.