00601oam 2200181z- 450 9910842874703321(CaSebORM)01120100005SI(CKB)4940000000628228(EXLCZ)99494000000062822820240402c2002uuuu -u- -engMasked Dispatches: Cryptograms and Cryptology in American History, 1775-1900Center for Cryptologic History, NSAMasked DispatchesBOOK9910842874703321Masked Dispatches: Cryptograms and Cryptology in American History, 1775-19004149222UNINA