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

“Peter's Rock in Mohammed's Flood, from St. Gregory the Great to St. Leo III” by T. W. Allies — a free Project Gutenberg ebook, available to read as an EPUB on BookMarket. Subjects: Christianity and other religions -- Islam; Church history -- Middle Ages, 600-1500; Papacy; Papacy -- History. Original source: https://www.gutenberg.org/ebooks/34172. This ebook is in the public domain in the United States; the Project Gutenberg eBook license applies to the original text.