A History of Pisa: Eleventh and Twelfth Centuries

History of Scottish Seals from the Eleventh to the Seventeenth Century: With Upwards of Two Hundred Illustrations Derived from the Finest and Most Interesting Examples Extant. Volume 1

The Tower That Leaned Into History: The Story of the Leaning Tower of Pisa For Kids

Europe in the Eleventh Century: Beyond Revolution and Reform (Oxford History of Medieval Europe)

The Age of the Crusades: The Near East from the Eleventh Century to 1517 (A History of the Near East)