- The Last Age of the Church
- Cogadh Gaedhel re Gallaibh: The War of the Gaedhil with the Gaill: or, The Invasions of Ireland by the Danes and Other Norsemen
- Leabhar Breathnach Annso Sis: The Irish Version of the Historia Britonum of Nennius
- The Book of Hymns of the Ancient Church of Ireland
- The Books of the Vaudois