- Who Started the Mexican-American War?
- Did Mexico Sell California to the United States?
- Why did Polk settle for the 49th parallel as the boundary for the Oregon territory?
- The Great American Desert: What, Why, and How?
- The Rise and Fall of the Saint Patrick’s Battalion
- The Oregon Territory: Legitimacy
- Why, and How, Did James K. Polk Win the Democratic Nomination in 1844?
- Andrew Jackson, James K. Polk, and The Panic of 1819