A collection of six vintage hardcover editions from the Nancy Drew Mystery Stories series by Carolyn Keene. Includes the following titles: 'The Clue in the Jewel Box' (Volume 20), 'The Secret in the Old Attic' (Volume 21), 'The Clue in the Crumbling Wall' (Volume 22), 'The Mystery of the Tolling Bell' (Volume 23), 'The Clue in the Old Album' (Volume 24), and 'The Ghost of Blackwood Hall' (Volume 25). Each book features iconic artwork on the covers and is in used condition showing minor wear consistent with age. Published by Grosset & Dunlap.