Adrian J. Boas 
Jerusalem in the Time of the Crusades [PDF ebook] 
Society, Landscape and Art in the Holy City under Frankish Rule

Adrian Boas’s combined use of historical and archaeological evidence together with first-hand accounts written by visiting pilgrims results in a multi-faceted perspective on Crusader Jerusalem. Generously illustrated, this book will serve both as a scholarly account of this city’s archaeology and history, and a useful guide for the interested reader to a city at the centre of international and religious interest and conflict today.