- "On the Life and Miracles of Saint Anthony" (1913)
- "Saint Gregory of Tours" (1931)
- "The Life and Times of Saint Martin of Tours" (1936)
- "Saint Germanus of Auxerre" (1941)
- "Saint Patrick: The Apostle of Ireland" (1944)
- "Saint Benedict: The Father of Western Monasticism" (1949)
- "Saint Columban: The Apostle of the Scots" (1951)
- "Saint Aidan: The Apostle of Northumbria" (1954)
- "Saint Cuthbert: The Apostle of the Borders" (1956)
- "Saint John the Baptist: The Forerunner of Christ" (1959)
Articles:
- "The Cult of Saint Anthony in the West" (1914)
- "Saint Gregory of Tours and the Arian Controversy" (1932)
- "The Life and Miracles of Saint Martin of Tours" (1937)
- "Saint Germanus of Auxerre and the Pelagian Controversy" (1942)
- "Saint Patrick and the Conversion of Ireland" (1945)
- "Saint Benedict and the Rule of Saint Benedict" (1950)
- "Saint Columban and the Celtic Monasticism" (1952)
- "Saint Aidan and the Conversion of Northumbria" (1955)
- "Saint Cuthbert and the Lindisfarne Gospels" (1957)
- "Saint John the Baptist and the Messianic Expectation" (1960)
Collections:
- "Essays in Early Christian History" (1927)
- "Studies in Hagiography" (1940)
- "The Age of Saint Columban" (1953)
- "The Cult of Saints in Late Antiquity and the Early Middle Ages" (1959)