Osborne, Mary Pope <br/><br/>
Christmas in Camelot / 
Mary Pope Osborne 
 - New York :  Scholastic,  2001 
 - 115 pages. 
<br/><br/> On Christmas Eve, Jack and Annie's tree house transports them to King Arthur's castle at Camelot, where they undertake a quest to the castle of the Otherworld.  
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<br/><br/><label>ISBN: </label>9780545403450