If you are a connoisseur of beautiful books, Taschen are the publishers to go to... Now they've done something Outremer-friendly! I picked up this gem in the university bookshop while sheltering from the rain at lunchtime:
Sébastien Mamerot: A Chronicle of the Crusades. It's a translation of a 1470s history of Outremer, with the original MS illustrations. So if you want to see all the usual suspects looking as if they've wandered in from the Wars of the Roses, this is where to go! The plates are gorgeous! And, being Taschen, it's affordable!