America's Great Debate: Henry Clay, Stephen A. Douglas, and the Compromise That Preserved the Union

After Lincoln: How the North Won the Civil War and Lost the Peace

Ratification: The People Debate the Constitution, 1787-1788

A Country of Vast Designs: James K. Polk, the Mexican War and the Conquest of the American Continent (Simon & Schuster America Collection)

Impeached: The Trial of President Andrew Johnson and the Fight for Lincoln's Legacy

All the Great Prizes: The Life of John Hay, from Lincoln to Roosevelt