| Business Telegraphic Code. 300 pp. narrow 8vo. (Size 4¾ in. by 7¾ in. and ½ in. thick, and weight 10 oz.) (New York, 1906) net | 1 | 10 | 0 |
| Miners’ and Smelters’ Code (formerly issued as the Master Telegraph Code). 448 pp. 8vo, limp leather, weight 14 oz. (New York, 1899) net | 2 | 10 | 0 |
| Billionaire Phrase Code, containing over two million sentences coded in a single word. 56 pp. 8vo, leather. (New York, 1908) net | 6 | 6 |