Replies

Politically Incorrect Guide to Islam and the Crusades
http://www.amazon.com/gp/product/0895260131/102-8659598-2397726?v=glance&n=283155&v=glance
by Robert Spencer

Catholic crusades info from New Advent
http://www.newadvent.org/cathen/04543c.htm

great links for Crusades and medieval history
http://www.homeusers.prestel.co.uk/church/chivalry/crusades.htm

Hefty but full of comprehansive and well researched info about much more than the military aspect of the Crusades. Not sure how objective but the author at least had strong objections to "Kingdom of Heaven" saying it was very inaccurate. This work has input from several historians.
Lots of color plates of art from the period, maps etc.
The Oxford Illustrated History of the Crusades
http://www.amazon.com/gp/product/0192854283/102-8659598-2397726?v=glance&n=283155&v=glance