S. Athanasius. Later Treatises of S. Athanasius, Archbishop of Alexandria, with Notes; and an Appendix on S. Cyril of Alexandria and Theodoret. London; Oxford; Cambridge: James Parker and Co.; Rivingtons, 1881.
Possibly Treatise I and definitely Treatises II-VI are letters and need to be labeled as such for Factbook and the Letters Guide section
