Books in The Nancy Drew mystery stories series

Nancy Drew, 18-year-old amateur detective, is a classic mystery series for ages 9 to 12. In each story, Nancy has a mystery to solve along with help from her father and friends: Helen, Bess, George, Ned, Burt, and Dave. Books include: 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; #10, Password to Larkspur Lane; #11, The Clue of the Broken Locket; #12, The Message in the Hollow Oak; #13, The Mystery of the Ivory Charm; #14, The Whispering Statue; #15, The Haunted Bridge; #16, The Clue of the Tapping Heels; #17, Mystery of the Brass-Bound Trunk; #18, Mystery of the Moss-Covered Mansion; #19, The Quest of the Missing Map; #20, The Clue in the Jewel Box; #21, The Secret in the Old Attic; #22, The Clue in the Crumbling Wall; #23, Mystery of the Tolling Bell; #24, The Clue in the Old Album; #25, The Ghost of Blackwood Hall; #26, The Clue of the Leaning Chimney; #27, The Secret of the Wooden Lady; #28, The Clue of the Black Keys; #29, Mystery at the Ski Jump; #30, The Clue of the Velvet Mask; #31, The Ringmaster's Secret; #32, The Scarlet Slipper Mystery; #33, The Witch Tree Symbol; #34, The Hidden Window Mystery.