A History of the Crusades

One of the major resources for the study of the crusades is the six volume, History of the Crusades. It is still in print, in both paperback and hardback.  It is also available online in both pdf format, and searchable ebook.  Here are the volumes, with links to amazon, pdf, and online ebook.  The official digital page is here.  

Setton, K. and M. Baldwin (eds.). A History of the Crusades, Volume I: The First Hundred Years.  1969.

Setton, K., R. Wolff, and H. Hazard (eds.). A History of the Crusades, Volume II: The Later Crusades, 1189-1311. 1969.

Setton, K., and H. Hazard (eds.). A History of the Crusades, Volume III: The Fourteenth and Fifteenth Centuries. 1975.

Setton, K., and H. Hazard (eds.). A History of the Crusades, Volume IV: The Art and Architecture of the Crusader States. 1977.

Setton, K., H. Hazard, and  N. Zacour (eds.) A History of the Crusades, Volume V: The Impact of the Crusades on the Near East. 1985

Setton, K., H. Hazard, and  N. Zacour (eds.) A History of the Crusades, Volume VI: The Impact of the Crusades on Europe. 1989.