This vintage hardcover book, titled "The Mystery of the Locked Room" by Carolyn Keene, is a must-have for any fan of the Dana Girls series. Published by Grosset and Dunlap in New York in 1938, this book is a great filler to any collection of antiquarian and collectible books. The book is written in English and features an illustrated frontpiece, making it a special find for collectors. The book falls under the topic of young adult mystery and thriller with the subject of children's literature. The book is in acceptable condition and will make a great addition to any bookshelf.

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