This vintage copy of Nancy Drew: The Clue of the Black Keys, copyright 1951, is a must-have for any collector. While it shows its age, with some wear and tear to the cover and spine, it remains a charming piece of literary history. A great addition to your bookshelf. While this book has journeyed through time and picked up a few stories along the way (we're calling them 'character marks'!), it's ready for a new chapter with you. Remember, if the ad is up, the book is still available, because in the world of mysteries, the plot thickens until the last page is turned!