United States diplomatic codes and ciphers, 1775-1938

Chicago: Precedent Publishing, 1979. xviii, 633 p., very good hardcover in dj. Jacket text promises that "The codes and ciphers published in the text and appendix will enable historians and others to read secret State Department dispatches before 1876, and explain code designs after that year"

Cat.No: 188686
ISBN: 0913750204

Price: $20.00