PG 65 · cols. 833–888
Proclus of Constantinople, Mai's series: Sermon on the Ascension, Treatise on the Mass, Letters, Fragments
Proclus of Constantinople (d. 446): the homilies and fragments recovered by Angelo Mai, the Treatise on the Tradition of the Divine Liturgy ascribed to him, and his letters, among them the Tome to the Armenians (435), in Greek with the facing Latin (several letters survive only in Latin), with Mai's preface and the editors' notes.
Migne Reading Room