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This Web site, provided by the Public Broadcasting Service (PBS), is home to more than 1,000 television show companion sites in addition to Web-original sites. PBS ...

U.S. History covers the development of the United States from the history of early exploration through modern times. American historical people are presented in the context of the development of the American nation on political, economic, and social planes.

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Infoplease.com, a free, authoritative, and respected reference for Internet users, provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus. Infoplease.com contains facts on all subjects including sports, entertainment, technology, education, world news, and united states government and history.

The Library of Congress. The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 120 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.

YourDictionary is a free online dictionary that offers definition search from Webster's dictionary for word meanings and thesaurus. Use this dictionary search as a crossword or scrabble dictionary. Also find legal dictionary, technical words, glossary, foreign language translation, medical dictionary, and rhyming dictionary lists.