Writings from the apostolic-era church of the 1st and 2nd century: Didache, Epistle of Barnabas, Epistle of Clement, Epistle to Diognetus, Epistles of Ignatius, Martyrdom of Ignatius, Shepherd of Hermas, Epistle of Polycarp, Martyrdom of Polycarp. https://mega.nz/folder/fNAmzTiI#8ozr40a-Dl48aLeDKQaZOQ
Writings from the primitive-era church of the 2nd to 4th century: Justin Martyr, Athenagoras, Tatian, Theophilus of Antioch, Irenaeus, Clement of Alexandria, Tertullian, Hippolytus, Origen, Cyprian. https://mega.nz/folder/XNQHxYza#SYtylDvlDtBw_xWzDcstkA