AP Central
Practice tests, documents based questions, and information on the AP Exam
Eyewitness to History
Great and unique first person accounts of many historical events throughout US History.
History Teacher Network
This site has some excellent study materials for the AP exam. There are a lot of practice quizzes with immediate feedback.
Lewis and Clark Expedition
This site gives great details on the Lewis and Clark expedition and has an interactive game that you can play, very similar to Oregon Trail.
Study Stack
Multiple flashcard sets for help studying. Mrs. Godfrey has placed some divided according to President on the site under her name. These are excellent for the EOC.
The Living Room Candidate
This site has presidential candidate adds from 1952 to the present. They are extremely interesting and entertaining.