Book

1. Book Containing the History of the Grail, A
   

   Christ himself wrote this book according to Vulgate I.

   
   

2. Book of Geoffrey of Monmouth
   

   Arthur finds a copy of his Historia Regum Britanniae in the House of Temperance, ruled by Alma.

   The book is unnamed but is identified by its contents. Arthur's version of the book, naturally, breaks off after the reign of Uther Pendragon.

   
   

3. Book of the Four Evangelists, The
   The Gospels

   Oaths were sworn upon this. Possibly any book may be used for swearing oaths upon.

   [Lancelot] made bring forth a book [and said] Here we are ten knights that will swear upon a book never to rest one night where we rest another this twelvemonth until that we find Sir Tristram.