The two-volume Chronica Maiora of Matthew Paris (c.1190-1259), monk of St Albans, is one of the major records of history at the time of the Crusades. It is the author’s own copy, with illustrations in his own hand. The picture here shows the disastrous Battle of Hattin in Palestine, when Saladin defeated the crusaders’ armies and captured the True Cross. The battle took place of 4 July 1187. MS 26, folio 140r.
History by the Month: July and the Battle of Hattin
The Parker Library 
Is this document digitised? To view the illumination(s) full screen would be fantastic… Is this possible?
All the Parker Library manuscripts are digitised at Parker on the Web: https://parker.stanford.edu There is a pay-wall for large images, however, this will change in the coming years.