| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| History of Codes and Ciphers in the U.S. During the Period Between World Wars: 1919-1929 | 978-O-89412-O39-8 (O-89412-O39-5) | 1979 |
A. S. · s. a. · S A S · S S · u.a. · U. S. · U.S.A. · U.S. Army · United States · United States Army