Sword and Cross: Medieval Europe's Crusades Against the Armies of the Levant (Portable Professor)

To Rule Mankind and Make the World Obey: A History Of Ancient Rome (Portable Professor: World History)

Jerusalem: City of God, City of Fire (Portable Professor: World History)

Codes of Power: Political Thought from Plato's Cave to Game Theory (Portable Professor)

Shaping Justice: Landmark Cases of the U.S. Supreme Court (Portable Professor- U.S. History)

When Gods Walked the Earth (Portable Professor, Myths of Ancient Greece)

April 1865 (Portable Professor)

Foundations of Western Thought (Portable Professor, Hebrews, Greek, and Romans)

Sailing to the Edge of the World (Portable professor)

Making Man in Reason's Image: The Enlightenment and the Birth of Modern Humanity