American Civil War: The Definitive Encyclopedia and Document Collection by 
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A Dictionary of Contemporary World History by This link opens in a new window
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A Dictionary of World History by This link opens in a new window
Women in World History : a Biographical Encyclopedia by This link opens in a new window
A Companion to World History by This link opens in a new window
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Encyclopedia of Invasions and Conquests : From Ancient Times to the Present by This link opens in a new window
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The Oxford Companion to American Military History by This link opens in a new window
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Concise Oxford Dictionary of Archaeology by This link opens in a new window
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Understanding Stone Tools and Archaeological Sites by This link opens in a new window