Rare collectible mystery book from 1937 by the prolific author of the Nancy Drew series, Mildred A. Wirt (AKA Carolyn Keene, amongst other names). This is the fourth book in the 'A Mystery Story for Girls' series.

• Published by Cupples & Leon, 1937
• Hardcover
• For ages 10 years and up 
• Condition: Vintage – wear consistent with age and use (see pictures for details). Has protective plastic covering over dust jacket.