Nancy Drew Mystery Collection (Boxed Set of 10 books)

All original books 1-10: (1) The Secret of the Old Clock, (2) The Hidden Staircase, (3) The Bungalow Mystery, (4) The Mystery at Lilac Inn, (5) The Secret of Shadow Ranch, (6) The Secret of Red Gate Farm, (7) The Clue in the Diary, (8) Nancy's Mysterious Letter, (9) The Sign of the Twisted Candles, (1) Password to Larkspur Lane.