The Holt Labor Library is a labor and radical history library that serves the labor, academic, and activist communities. The library is located in San Francisco and is open to the public.

The Wisconsin Historical Society collects and disseminates knowledge of Wisconsin and of the trans-Allegheny West. Come and see how the Society brings history to life.

Historycentral.com is your one source for everything on American History and World History. Special sections on: Americas Wars, American Presidential elections, Civic, Aviation History, The Sixties,and much more.

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.

Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. Ask questions, get answers.

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.