v. 1. Apostolic Christianity -- v. 2. Ante-Nicene Christianity -- v. 3. Nicene and post-Nicene Christianity -- v. 4. Medieval Christianity-- v. 5. The Middle Ages, 1049-1294 -- 6. The Middle Ages, 1294-1517 -- v. 7. The German Reformation -- v. 8. The Swiss Reformation.