History, theory, and practice of the electric telegraph (hardcover) by George B Prescott (author) This is a 1972 reprint of the fourth edition which was published by Ticknor and Fields in 1866, 508 pages, plus 6 pages added from another old telegraph book that shows illustrations of threadless insulators, wood covered Wade, woodblock and Brooks ramshorns, etc. This hardcover was issued without a dust jacket, has a sturdy blue cloth binding and is in very good used condition. Extremely interesting information on early telegraph construction, materials, etc. A must read for anyone interested in early telegraph insulator history. These generally sell in the $100+ range when you can find them. Let's go $55.00 ppd for one of the best books you can add to your library!