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William Friedman and Elizebeth Smith Friedman, American Cryptanalysts
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Keywords: ., america, american, bw, cipher, codebreaker, cracking, cryptanalysis, cryptanalyst, cryptanalysts, cryptographer, decoding, decryption, elizabeth, elizebeth, encryption, famous, female, friedman, history, male, man, military, person, purple, secret, smith, top, usa, war, william, woman, wwi, wwii