- Letters attributed to [Clement of Rome] - The [First Epistle of Clement] - The [Second Epistle of Clement](https://en.wikipedia.org/wiki/Second_Epistle_of_Clement "Second Epistle of Clement")_ (contested authorship; see [§ Clement of Rome] - Seven epistles of [Ignatius of Antioch] - The [Martyrium Ignatii] - The [Epistle of Polycarp] - The [Martyrdom of Polycarp] - Fragments of the writings of [Papias of Hierapolis], which have survived as quotations in later writers - One short fragment of the Apology of [Quadratus of Athens] - The [Didache] - The [Epistle of Barnabas] - The [Epistle to Diognetus] - The [Shepherd of Hermas]