American Civil War Reference Library cover American Decades Primary Sources cover American Revolution cover American Revolution Reference Library cover Arms & Armour cover Bowling, Beatniks, and Bell-Bottoms: Pop Culture of 20th-Century America cover Civil War cover Early Civilizations in the Americas Reference Library cover Early Humans cover Encyclopedia of Food and Culture cover Encyclopedia of the Great Depression cover Explorer cover History Behind the Headlines: The Origins of Conflicts Worldwide cover Knight cover Mythology cover North American Indian cover Pirate cover Shipwreck cover Titanic cover Viking cover World War I cover World War II cover