| [INVITATION] "COMPUTER SECURITY EVENT OF THE YEAR" |
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| [INSTRUCTION BOOKLET] "MODES OF OPERATION" |
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| [CORRESPONDENCE FROM E.A. BRADLEY COMPANY TO UNDETERMINED REGARDING COMPANY'S PRODUCTS WITH ATTACHMENTS] |
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| [COPY][BOOK] CLOAK AND CIPHER |
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| [COPY] [REPORT] "ENCIPHERMENT AND DECIPHERMENT DURING WORLD WAR I" |
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| [COPY] [REPORT ON DES ENCRYPTION ALGORITHM] |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 682046" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 667562" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 534947" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 452194" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 425454" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 416219" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 414283" |
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| [COPY] [PATENT] "REICHSPATENTAMT PATENTSCHRIFT NUMMER 378238" |
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| [COPY] [JOURNAL ARTICLE EXCERPT] "PLANNING A SECURE SYSTEM" |
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| [COPY] [BOOK] ON GUARD THE BUSINESS OF PRIVATE SECURITY |
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| [COPY] PATENT [FOR CIPHERING MACHINE] |
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| [BROCHURE] "THE CODEBREAKERS" [WITH ATTACHMENTS] |
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| [BROCHURE OF SUMMARIES OF GOVERNMENT REPORTS] |
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| [BOOKLET] "THE LENKURT DEMODULATOR" [WITH ATTACHMENT] |
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