DiCamillo, Kate, <br/><br/>
Mercy Watson : princess in disguise  princess in disguise 
 Princess in disguise 
Kate DiCamillo ; illustrated by Chris Van Dusen. 
 - First edition 2007. 
 - Cambridge, MA :  Candlewick Press,  2007. 
 - 70 pages :  color illustrations ;  22 cm. 
 - Mercy Watson;  bk. 4 .
<br/><br/> Persuaded by the word "treating" to dress up as a princess for Halloween, Mercy the pig's trick-or-treat outing has some very unexpected results. 
<br/><br/> A Junior Library Guild selection 
<br/><br/><label>ISBN: </label>9780763630140 9780763649517 
<br/><br/><label>LCCN: </label>2006051827 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humorous stories.<br/>Swine--Juvenile fiction.<br/>Halloween--Juvenile fiction.
<br/><br/><label>LC Class. No.: </label>PZ7.D5455  / Mpd 2007 
<br/><br/><label>Dewey Class. No.: </label>[Fic]