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01246nam a2200277 i 4500 001 961EE0542AE811DE94715D06A8D7520A 005 200904161942.0 008 800428s1978 caua 00100 eng d 020 $a 9780894120268 020 $a 0894120263 040 $a IaU $c IaU $d SILO 245 0 $a The History of codes and ciphers in the United States prior to World War I / $c edited by Wayne G. Barker. 260 $a Laguna Hills, Calif. : $b Aegean Park Press, $c c1978. 300 $a 159 p. : $b ill. ; $c 28 cm. 490 0 $a A cryptographic series 500 $a Includes index. 500 $a The edited text of a manuscript prepared in 1946 by the Historical Section of the Army Security Agency, Washington, D.C., originally titled Codes and ciphers prior to World War I (1776-1917), which was v. 1 of Historical background of the Signal Security Agency. 650 0 $a Ciphers $x History. 650 0 $a Cryptography $z United States $x History. 700 1 $a Barker, Wayne G. 710 1 $a United States. $b Historical Section. $b Historical Section. 939 $a 2386768 941 $a 2 952 $l OVUX522 $d 20171228031035.0 952 $l USUX851 $d 20160806065213.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=961EE0542AE811DE94715D06A8D7520AInitiate Another SILO Locator Search