Title: Basilica: The Splendor and the Scandal: Building St. Peter's, Author: R. A. Scotti
Title: The Pursuit of Italy: A History of a Land, Its Regions, and Their Peoples, Author: David Gilmour
Title: Prisoner of the Vatican: The Popes' Secret Plot to Capture Rome from the New Italian State, Author: David I. Kertzer
Title: The Travels of Marco Polo, Author: Rustichello da Pisa/Marco Polo