The history of codes and ciphers in the United States prior to World War I /
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| Other Authors: | |
| Format: | Book |
| Language: | English |
| Published: |
Laguna Hills, Calif. :
Aegean Park Press,
[1978]
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| Series: | Cryptographic series ;
20. |
| Subjects: |
| Item Description: | "This book ... is essentially volume 1 of Historical background of the Signal Security Agency, written in 1946 by the Historical Section of the Army Security Agency." |
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| Physical Description: | 159 pages : facsimiles, illustrations ; 28 cm. |
| Bibliography: | Includes bibliographical references and index. |
| ISBN: | 0894120263 |