A History of the Papacy from the Great Schism to the Sack of Rome (Vol. VI)
A History of the Papacy from the Great Schism to the Sack of Rome (Vol. V)
A History of the Papacy from the Great Schism to the Sack of Rome (Vol. IV)
A History of the Papacy from the Great Schism to the Sack of Rome (Vol. III)
A History of the Papacy from the Great Schism to the Sack of Rome (Vol. II)