Calling all sleuth-loving readers and vintage book collectors! This is a first edition 1942 copy of The Clue of the Rusty Key, book #11 in The Dana Girls Mystery Stories series by Carolyn Keene. From the same author who brought us Nancy Drew, this mystery delivers clever twists, strong female leads, and that classic mid-century charm! This hardcover book shows a good stain on the side cover (see photos) and has an inscription on the inside, but it remains in good readable condition. The clothbound green cover features the iconic Dana Girls silhouette under a tree—perfect for collectors of juvenile series fiction or lovers of golden-age mysteries. Details: • Title: The Clue of the Rusty Key • Series: The Dana Girls Mystery Stories, Book #11 • Author: Carolyn Keene • Publisher: Grosset & Dunlap • Year: 1942 (First Edition) • Format: Hardcover (no dust jacket) • Condition: Good vintage condition; noticeable stain on side cover, inscription inside front cover, otherwise clean interior and tight binding • Dimensions: Approx. 7.5 x 5 inches A perfect gift for vintage mystery fans, young sleuth enthusiasts, or anyone who loves that nostalgic detective fiction vibe! Keywords (SEO): 1. Dana Girls book 2. Carolyn Keene mystery 3. Vintage mystery novel 4. 1942 Dana Girls 5. The Clue of the Rusty Key 6. First edition Carolyn Keene 7. Girls detective series 8. Mid-century mystery book 9. Juvenile fiction collectible 10. Retro girls mystery 11. Vintage sleuth book 12. 1940s children’s book 13. Detective girls series 14. Early edition Dana Girls 15. Classic mystery story 16. Green clothbound book 17. Teen mystery series 18. 1942 girls novel 19. Nancy Drew author 20. Grosset & Dunlap 1942 21. Inscribed vintage book 22. Antique young adult book 23. Vintage series fiction 24. Mystery book for girls 25. Clue of the Rusty Key 26. Dana Girls collectible 27. Retro book gift 28. Vintage sleuth series 29. First edition mystery 30. Classic female detectives