Books about Church history -- Primitive and early church, ca. 30-600

The Conflict of Religions in the Early Roman Empire

Christianity and Greek Philosophy

The Catacombs of Rome, and Their Testimony Relative to Primitive Christianity

The Holy See and the Wandering of the Nations, from St. Leo I to St. Gregory I

Curiosities of Christian History Prior to the Reformation

Historical Sketches, Volume I (of 3)

Church and State as Seen in the Formation of Christendom

The Early Christians in Rome

Constantine the Great: The reorganization of the Empire and the triumph of the Church

L'Imperatore Giuliano l'Apostata: studio storico (Italian)

Landmarks in the History of Early Christianity

The influence of Greek ideas and usages upon the Christian church

The Basis of Early Christian Theism

The Gospels in the Second Century

The Ancient Church: Its History, Doctrine, Worship, and Constitution

A Key to the Knowledge of Church History (Ancient)

English Conferences of Ernest Renan: Rome and Christianity. Marcus Aurelius

Life in the Roman World of Nero and St. Paul

A visit to the Roman catacombs

Sketches of Church History, from A.D. 33 to the Reformation

La rovina della civiltà antica (Italian)

Dissertatiunculae Quaedam Critico-Theologicae (Latin)

Kertomuksia kirkkohistorian alalta 1: Vanha aika (Finnish)