Lincoln

Crazy Horse and Custer: The Parallel Lives of Two American Warriors

We Are Lincoln Men: Abraham Lincoln and His Friends

This Republic of Suffering: Death and the American Civil War (National Book Award Finalist)

The Thirteen Colonies

Why The North Won The Civil War

Narrative of the Life of Frederick Douglass: An American Slave

Liberty and Union

Personal Memoirs of Ulysses S. Grant: Volumes One and Two

Truman

Lincoln at Home: Two Glimpses of Abraham Lincoln's Family Life

Team of Rivals: The Political Genius of Abraham Lincoln

Lincoln's Herndon

Twelve Years a Slave

Charles Sumner and the Coming of the Civil War

John Adams

Charles Sumner and the Rights of Man

The Rise of Theodore Roosevelt

By Chance Alone: A Remarkable True Story of Courage and Survival at Auschwitz