The American Black ChamberThe history and work of the Cryptographic Bureau, officially known as section 8 of the U.S. War Dept. Military Intelligence Division (MI-8). |
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alphabet already Ambassador American Black Chamber Anglo-Japanese Alliance asked Berkeley Berkeley British cable cablegram CALIFORNIA LIBRARY Captain chemists Churchill Cipher Bureau cipher message clerks code book code messages Code Room code telegrams code words codes and ciphers Colonel column course cover-address cryptographer deciphered decipherment decode Deman Department develop diplomatic codes discovered discovery Doctor Collins document enciphered encoded enemy espionage figure foreign governments Foreign Office France French German German spy groups instructions intercepted Japan Japanese codes Japanese Government Japanese language kana knew language London Lord CURZON Madame Victorica ment method Mexican Mexico Military Attaché Military Intelligence Navy Pablo Waberski paper photograph postal censorship question reagent received replied secret agents secret writing secret-ink secret-ink letters Secretary sent solution solve Spanish spies telegrams telephone tion Tokio told transposition cipher United UNIVERSITY OF CALIFORNIA Washington Washington Armament Conference wireless Yardley دو