01455nam 2200397 450 991070346430332120141021125128.0(CaSebORM)01120100005SI(CKB)4100000011376006(OCoLC)893484406(EXLCZ)99410000001137600620141021d2013 ua 0engurmn|||||||||rdacontentrdamediardacarrierMasked dispatches cryptograms and cryptology in American history, 1775-1900 /Ralph E. WeberThird edition.[Fort George G. Meade, MD] :Center for Cryptologic History, National Security Agency,2013.1 online resource (xvi, 202 pages) illustrationsUnited States cryptologic history. Series 1, Pre-World War I ;v. 1Title from title screen (viewed Oct. 20, 2014)."CCH-EC-02-03."Includes bibliographical references (pages 225-227).Masked DispatchesCryptographyUnited StatesHistoryCryptographyHistory.Weber Ralph E(Ralph Edward),1926-1410969United States.National Security Agency/Central Security Service.Center for Cryptologic History,GPOGPOBOOK9910703464303321Masked dispatches3500989UNINA