Peter's Rock in Mohammed's Flood, from St. Gregory the Great to St. Leo III

The Formation of Christendom, Volume II

The Formation of Christendom, Volume VI / The Holy See and the Wandering of the Nations, from St. Leo I to St. Gregory I

The Church of England cleared from the charge of Schism / Upon Testimonies of Councils and Fathers of the first six centuries

St. Peter, His Name and His Office, as Set Forth in Holy Scripture

Church and State as Seen in the Formation of Christendom