TELEGRAPH CODES
New Business Code. 320 pp., narrow 8vo. (Size 4-3/4 in. by 7-3/4 in. and 1/2 in. thick, and weight 10 oz.) (New York, 1909.) £1 1s. net.
Miners' and Smelters' Code (formerly issued as the Master Telegraph Code). 448 pp., 8vo, limp leather, weight 14 oz. (New York, 1899.) £2 10s. net.
Billionaire Phrase Code, containing over two million sentences coded in single words. 56 pp., 8vo, leather. (New York, 1908.) 6s. 6d. net.