- The History of the Popes from the Close of the Middle Ages, Volume 29: 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 Vatican And Other Original Sources; Volume 3
- The History of the Popes From the Close of the Middle Ages: drawn from the secret archives of the Vatican and other original sources - Vol. 26
- Die reise des kardinals Luigi d'Aragona durch Deutschland, die Niederlande, Frankreich und Oberitalien, 1517-1518
- Die Stadt ROM Zu Ende Der Renaissance (Classic Reprint)