Mystery behind the wall.
By: Illustrated by David Cunningham.
Contributors: Cunningham, David, 1938- illus.
Series: Her The Alden family mysteries
Publisher: A. Whitman
Published: 1973
Place of publication: Chicago
Language: eng
Number of pages: 127
Subjects: Boxcar children (Fictitious characters) -- Juvenile fiction; Orphans -- Juvenile fiction; Family -- Juvenile fiction; Brothers and sisters -- Fiction; Orphans -- Fiction; Mystery and detective stories
Description: A young Canadian visitor helps the Alden family solve a mystery involving a lost coin collection.