Osborne, Mary Pope. <br/><br/>
Horse heroes 
Mary Pope Osborne 
 - ed. 
 - [S.l.]  Random House  2013 
 - 124 p. 
 - Magic tree house fact tracker .
 - Magic tree house fact tracker .
<br/><br/><label>ISBN: </label>9780375870262 (pbk.) 9780375970269 (lib. bdg.)