- History of the Christian Church: A.D. 64-1517, Volume 2, Part 1
- History of the Christian Church: From the Apostolic Age to the Reformation, A.D. 64-1517, Volume 5...
- History Of The Christian Church: From The Apostolic Age To The Reformation, A.d. 64-1517, Volume 6...
- Pope Alexander the Seventh and the College of Cardinals
- History of the Christian Church, Volume II, Part I