Ralph Francis Kerr

• The history of the popes, from the close of the middle ages
• The history of the popes, from the close of the middle ages
• The History of the Popes, From the Close of the Middle Ages. Drawn From the Secret Archives of the Vatican and Other Original Sources
• The History of the Popes, from the Close of the Middle Ages: Drawn from the Secret Archives of ...
• The History of the Popes, from the Close of the Middle Ages: Drawn from the Secret Archives of ...
• History of the Popes
• The History of the Popes, From the Close of the Middle Ages, 17 Volumes (Volumes I, II, III, IV, XV, XVI, XVII, XVIII, XIX, XX, XXI, XXII, XXIII, XXIV, XXXIII, XXXIV, XXXV)