Ludwig Freiherr Von Pastor

• The History of the Popes - Scholar's Choice Edition
• History of the Popes
• History of the Popes from the Close of the Middle Ages
• History of the Popes, from the Close of the Middle Ages; 15
• History of the Popes, from the Close of the Middle Ages; 17
• History of the Popes, from the Close of the Middle Ages; 40
• The History of the Popes
• The History of the Popes From the Close of the Middle Ages, drawn from the secret Archives of the Vatican and other original sources -- Volume XXIX
• The History of the Popes from the Close of the middle Ages. Vol. XIX