- The Christians: Their Fiirst Two Hundred Years: The Veil Is Torn, A.D. 30 to A.D. 70; Pentecost to the Destruction of Jerusalem
- By This Sign The Christians Their First Two Thousand Years [Volume 3]
- The Christians: Their First Two Thousand Years; Darkness Descends A.D. 350 to 565 The Fall of the Western Roman Empire [Vol. 4]
- The Sword of Islam A.D. 565 to 740: The Muslim Onslaught all but Destroys Christendom
- The Quest for the City A.D. 740-100: Pursuing the Next World, They Founded this One