Primary sources from the previous 30-40 years
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Primary sources from 1861 to 30 or 40 years ago
Foreign Relations of the United States records major U.S. foreign policy decisions and diplomatic activity. It contains declassified and unclassified documents from Presidential Libraries, State Department, Defense Department, National Security Council, CIA and others. This seriest tends to publish about 30-40 years after the events. The most current volumes as of fall 2009 is for 1969-1976.