Here we have a Vintage Slater's Code By Robert Slater. Telegraphic Code: To Ensure Secrecy in the Transmission of Telegrams. Inside the cover it says All Editions of this Code are printed from identical plates, and correspond one with another exactly. There is no indication of what edition it is. This hardcover book is approx. 6 1/2" tall x approx 4" wide. It is in good condition. It does have some wear and imperfections. See photos for more info.