Volume 1: Jewish prayers from table and synagogue; Subapostolic Era: the Didache, Clement of Rome, Ignatius of Antioch, Pastor Hermas; Second Century: Justin Martyr, Irenaeus of Lyons, Melito of Sardis; Third Century: Tertullian, Cyprian of Carthage, Hippolytus of Rome, the Didascalia of the Apostles, Origen, the Apostolic Church Order; and others.