The Frontier, the Union, and Stephen A. Douglas

The Lincoln-Douglas Debates of 1858

To the Halls of the Montezumas: The Mexican War in the American Imagination

Frontier Politics on the Eve of the Civil War

The Union in crisis, 1850-1877

Abraham Lincoln and the Road to Emancipation

The Life of Abraham Lincoln: From His Birth to His Inauguration as President

Abraham Lincoln and Men of War-Times: Some Personal Recollections of War and Politics During the Lincoln Administration

Jefferson's Empire: The Language of American Nationhood the Language of American Nationhood

Frontier Politics on the Eve of the Civil War