Powell, James M.

• Leopold von Ranke and the shaping of the historical discipline
• Medieval studies
• Muslims under Latin rule, 1100-1300
• Albertanus of Brescia
• Anatomy of a crusade, 1213-1221
• Crusade and Christendom
• Crusade and Christendom: Annotated Documents in Translation from Innocent III to the Fall of Acre, 1187-1291 (The Middle Ages Series)
• Innocent III
• Innocent III--Vicar of Christ or lord of the world?
• Medieval studies
• Medieval studies
• Papacy, Frederick II and Communal Devotion in Medieval Italy