Search the Library of Congress for primary sources, including prints and photographs, maps, sound recordings and film. There are sections on the "American Memory" and "Veterans" as well as "World History and Culture" which you can find at LOC Kids and Families.
Annals of American History - Topics include American Democracy, Exploration, Government and Law - provided by Encyclopedia Britannica.
WorldBook online provides articles and resources about Oklahoma. Stop by the Media Center to get login information if you are accessing WorldBook away from school.
View PBS AMERICAN EXPERIENCE episodes at American Experience Online
TRAIL OF TEARS - primary source documents:
Historical photos of aftermath of Race Riot (youtube slideshow)
For some fun, look at 50 years of history through music and images. Enjoy Billy Joel's "We Didn't Start the Fire."