Warner, Gertrude Chandler,  1890-1979. <br/><br/>
Houseboat mystery 
Gertrude Chandler Warner ; illustrated by David Cunningham. 
 - New York :  Scholastic Inc.,  1990. 
 - 128 p.  ill. 
 - Boxcar children ;  #12. .
<br/><br/><label>ISBN: </label>059042680X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Detective and mystery stories.