R.C. Smail

Jerusalem: The Holy City in the Eyes of Chroniclers, Visitors, Pilgrims, and Prophets from the Days of Abraham to the Beginnings of Modern Times

by F.E. Peters

Jerusalem: Rebirth of a City

by Martin Gilbert

Chivalry

by Maurice Keen

The Murdered Magicians: The Templars and their Myth

by Peter Partner

A History of Sicily: Ancient Sicily to the Arab Conquest

by M.I. Finley

Medieval Sicily: 800-1713 and Medieval Sicily: After 1713

by Denis Mack Smith

Death and Life in the Tenth Century

by Eleanor Duckett

The Other Conquest

by John Julius Norwich

The Making of the Christian West, 980-1140

by Georges Duby

The Birth of Europe

by Robert S. Lopez

The Guilt of the Templars

by G. Legman

The Fall of Constantinople 1453

by Steven Runciman

The Crescent and the Cross, The Fall of Byzantium: May, 1453

by David Dereksen