A set of 8 MP3 audio files of the Aquinas on the Trinity Course: 1) The Divine Processions; 2) The Divine Relations; 3) The Divine Persons; 4) God the Father; 5) God the Son; 6) God the Holy Spirit; 7) One Essence, Three Persons, and Appropriation; and 8) The Divine Missions and the Trinitarian Indwelling.