Crises in the History of the Papacy: A Study of Twenty Famous Popes whose Careers and whose Influence Were Important in the Development of the Church and in the History of the World (Paperback)

The Popes considered are Callistus, Damasus, Leo the Great, Gregory the Great, Hadrian I, Nicholas I, John X, Hildebrand, Innocent III, John XXII, John XXIII-I of the Great Schism, Alexander VI, Julius II, Leo X, Paul III, Sixtus V, Benedict XIV, Pius VII, Pius IX and Leo XIII.