Osborne, Mary Pope <br/><br/>
The knight at dawn 

 - New York :   Scholastic,   1993 
 - 66 p. :   ill.  
 - The Magic tree house series ;   #2 .
<br/><br/> Eight-year-old Jack and his younger sister Annie use the magic treehouse to travel back to the Middle Ages, where they explore a castle and are helped by a mysterious knight 
<br/><br/><label>ISBN: </label>0590623516 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knight and knighthood--Juvenile fiction<br/>Middle ages--Juvenile fiction<br/>Time travel--Juvenile fiction<br/>Magic--Juvenile fiction<br/>Tree houses--Juvenile fiction