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

Congress at War: How Republican Reformers Fought the Civil War, Defied Lincoln, Ended Slavery, and Remade America

Bound for Canaan: The Epic Story of the Underground Railroad, America's First Civil Rights Movement,

The First Congress: How James Madison, George Washington, and a Group of Extraordinary Men Invented the Government

Washington: The Making of the American Capital