Warner, Gertrude Chandler,  1890- <br/><br/>
Mystery behind the wall. 
Illustrated by David Cunningham. 
 - Chicago,  A. Whitman  [1973] 
 - 127 p.  illus.  21 cm. 
 - Her The Alden family mysteries .
<br/><br/> A young Canadian visitor helps the Alden family solve a mystery involving a lost coin collection. 
<br/><br/><label>ISBN: </label>0807553646 :  $10.95 
<br/><br/><label>LCCN: </label>72013356 /AC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery and detective stories.
<br/><br/><label>LC Class. No.: </label>PZ7.W244  / Mv 
<br/><br/><label>Dewey Class. No.: </label>[Fic]