Decline and Fall of the Roman Empire

Upon This Rock: A History of the Papacy from Peter to John Paul II

The Tiber and the Potomac: Rome, America, and Empires of Trust

Empire of Gold: A History of the Byzantine Empire

Christianity at the Crossroads: The Reformations of the Sixteenth and Seventeenth Centuries

The Catholic Church in the Modern Age

One, Holy, Catholic, and Apostolic: A History of the Church in the Middle Ages

God Wills It!: Understanding the Crusades

Heaven or Heresy: A History of the Inquisition

A History of Venice: Queen of the Seas

The Medieval World I: Kingdoms, Empires, and War

Medieval Mysteries: The History Behind the Myths of the Middle Ages

The Medieval World II: Society, Economy, and Culture