Osborne, Mary Pope. <br/><br/>
Eve of the Emperor penguin :  a Merlin mission / 
by Mary Pope Osborne ; illustrated by Sal Murdocca. 
 - New York :  Random,  2008. 
 - 109 p. :  ill. ;  22 cm. 
 - Magic tree house ;  #40 Stepping stone book .
 - Magic tree house ;  #40 A Stepping stone book .
<br/><br/> The magic tree house takes Jack and Annie to Antarctica to search for the fourth secret of happiness for Merlin. 
<br/><br/> 1-4.  6-9.  3.7.  530  Lexile. 
<br/><br/>
<br/><br/><label>ISBN: </label>9780375837333 0375837337 9780375937330 0375937331 9780375837340 (pbk.) 0375837345 (pbk.) 
<br/><br/><label>LCCN: </label>2008005769 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tree houses--Fiction.<br/>Time travel--Fiction.<br/>Magic--Fiction.<br/>Siblings--Fiction.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Antarctica--Fiction.
<br/><br/><label>LC Class. No.: </label>PZ7.O81167  / Ev 2008 
<br/><br/><label>Dewey Class. No.: </label>Fic