| [REPORT] SPECIAL RESEARCH HISTORY - 360, HISTORY OF INVENTION AND DEVELOPMENT OF THE MARK II ECM (ELECTRIC CIPHER MACHINE) |
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| [REPORT] SPECIAL RESEARCH HISTORY - 360, HISTORY OF INVENTION AND DEVELOPMENT OF THE MARK II ECM (ELECTRIC CIPHER MACHINE) |
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| [REPORT] SPECIAL RESEARCH HISTORY - 283, MILITARY CRYPTANALYSIS, PART II |
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| [REPORT] SPECIAL RESEARCH HISTORY - 283, MILITARY CRYPTANALYSIS, PART II |
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| [REPORT] SPECIAL RESEARCH HISTORY - 282, MILITARY CRYPTANALYSIS, PART I |
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| [REPORT] SPECIAL RESEARCH HISTORY - 282, MILITARY CRYPTANALYSIS, PART I |
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| [REPORT] SPECIAL RESEARCH HISTORY - 281, UNITED STATES NAVY FILE OF CORRESPONDENCE WITH DEPARTMENT OF STATE |
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| [REPORT] SPECIAL RESEARCH HISTORY - 281, UNITED STATES NAVY FILE OF CORRESPONDENCE WITH DEPARTMENT OF STATE |
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| [REPORT] SPECIAL RESEARCH HISTORY - 280, AN EXHIBIT OF THE IMPORTANT TYPES OF INTELLIGENCE RECOVERED THROUGH READING JAPANESE CRYPTOGRAMS |
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| [REPORT] SPECIAL RESEARCH HISTORY - 280, AN EXHIBIT OF THE IMPORTANT TYPES OF INTELLIGENCE RECOVERED THROUGH READING JAPANESE CRYPTOGRAMS |
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| [REPORT] SPECIAL RESEARCH HISTORY - 279, OP-20-G FILE, COMMUNICATION INTELLIGENCE ORGANIZATION |
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| [REPORT] SPECIAL RESEARCH HISTORY - 273, MILITARY CRYPTANALYTICS |
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| [REPORT] SPECIAL RESEARCH HISTORY - 272, CINCPAC ENEMY ACTIVITIES FILE |
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| [REPORT] SPECIAL RESEARCH HISTORY - 272, CINCPAC ENEMY ACTIVITIES FILE |
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| [REPORT] SPECIAL RESEARCH HISTORY - 271, PRESIDENTIAL MEMORANDUM ON COMMUNICATIONS INTELLIGENCE ACTIVITIES |
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| [REPORT] SPECIAL RESEARCH HISTORY - 270, ARMY-NAVY-FBI COMINT AGREEMENTS OF 1942 |
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| [REPORT] SPECIAL RESEARCH HISTORY - 269, UNITED STATES ARMY COMINT POLICY: PEARL HARBOR TO SUMMER 1942 |
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| [REPORT] SPECIAL RESEARCH HISTORY - 268, ADVANCED INTELLIGENCE CENTERS IN THE UNITED STATES NAVY |
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| [REPORT] SPECIAL RESEARCH HISTORY - 267, HISTORY OF ENGINEERING RESEARCH ASSOCIATES |
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| [REPORT] SPECIAL RESEARCH HISTORY - 266, JAPANESE SIGNAL INTELLIGENCE SERVICE, THIRD EDITION |
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