Subject
4 free books about papacy, free to read online. Chapter 1 of any book is free, no account needed.
Peter's Rock in Mohammed's Flood, from St. Gregory the Great to St. Leo III
T. W. Allies
The Empire and the Papacy, 918-1273
T. F. Tout
The Purpose of the Papacy
John S. Vaughan
Leo XIII., the Great Leader
A. P. Doyle
