General
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The Oxford companion to United States history by Covers the totality of the American experience, its triumphs and heroes as well as its tragedies and darker moments. -
Dictionary of American historyA collection of primary source documents appears in Volume 9.
Specific periods
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The Encyclopedia of the Cold War : a political, social, and military history by Publication Date: 2007 -
Encyclopedia of the Sixties : a decade of culture and counterculture by Publication Date: 2011
