There are many AP US History review books available, but some popular options include:
1. "AP U.S. History Prep Plus 2020 & 2021" by Kaplan Test Prep
2. "Cracking the AP U.S. History Exam 2020" by The Princeton Review
3. "Barron's AP United States History" by Eugene Resnick
4. "AP US History Premium: With 5 Practice Tests" by The Princeton Review
5. "5 Steps to a 5: AP U.S. History 2020" by Daniel P. Murphy
These books typically include comprehensive content review, practice questions, and full-length practice exams to help students prepare for the AP US History exam. It's important to choose a review book that aligns with your learning style and study preferences.