OSS - BASQUE SOURCE ON GERMAN INTELLIGENCE OPERATIONS/CORRESPONDENCE WITH THE FBI/INSTRUCTIONS ON WRITING ENCODED MESSAGES/BASQUE PRESIDENT AGUIRRE/HISTORY AND ORGANIZATION OF THE BASQUE INTELLIGENCE SERVICE/1942

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OSS - BASQUE SOURCE ON GERMAN INTELLIGENCE OPERATIONS/CORRESPONDENCE WITH THE FBI/INSTRUCTIONS ON WRITING ENCODED MESSAGES/BASQUE PRESIDENT AGUIRRE/HISTORY AND ORGANIZATION OF THE BASQUE INTELLIGENCE SERVICE/1942 | CIA FOIA (foia.cia.gov)