American History Resources:

http://americanhistory.si.edu/
Home page of the National Museum of American History.

http://americanhistory.about.com/
Charts, timelines, and essays.

http://www.historynet.com/
Numerous articles on World War II, Wild West, American History, Civil War and more.

http://www.africanaonline.com/
Features articles on the history of blacks in America, including slavery, the civil rights movement, and artistic movements.

 

http://search.eb.com/women/
Women in American history by Encyclopedia Britannica.

http://memory.loc.gov/
Library or Congress historical collections.

http://earlyamerica.com/
A unique array of primary source material from 18th Century America.

http://usinfo.state.gov
An outline of American history.

http://kclibrary.nhmccd.edu/decades.html
A series of web guides on the decades of the twentieth century.