American Decades. Detroit, Mich. : Gale Research, c1994-2001.
A ten-volume set providing cross-disciplinary coverage of events of the 20th century. Click on "Advanced Search" to refine your search.
Encyclopedia of American Studies.
Published by Johns Hopkins University Press with the sponsorship of the American Studies Association (ASA), the Encyclopedia of American Studies covers the history, philosophy, arts, and cultures of the United States in relation to the world, from pre-colonial days to the present.
Encyclopedia of Contemporary American Culture. London: Routledge, 2001
Gives both overviews and specific information regarding the major issues and experiences in contemporary American culture.