books.google.it - 1916. This book contains 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. Contents: St. Callistus and the Early Struggle; St. Damasus and the Triumph; Leo the Great, the Last Pope of Imperial Rome; Gregory...http://books.google.it/books/about/Crises_in_the_History_of_the_Papacy_1916.html?id=EkX2JjO4V6sC&utm_source=gb-gplus-shareCrises in the History of the Papacy, 1916
