The Grail: Quest for the Eternal

The Grail: Quest for the Eternal (ISBN 0824500350) by John Matthews is an historical book which was the basis of some sketches and texts seen in the Grail Diary prop in the movie Last Crusade.

The text of the Diary is practically unreadable on screen, but some words can be made out in some close ups. The Indiana Jones reference guides, have published photographs of the actual prop and some of the paragraphs are readable.