The Apostolic Fathers

The letter of Clement of Rome to Corinth (I Clement).

An ancient homily by an unknown author (II Clement).

The letters of Ignatius of Antioch.

Polycarp of Smyrna.

The Shepherd of Hermas.

The letter of Barnabas.

The teaching of the Lord to the Gentiles by the twelve apostles (the Didache).