| Title | Outline | Manuscript | Edited |
|---|---|---|---|
| 1. The Secret of the Old Clock, 1930 | E. Stratemeyer | M. Wirt | E. Stratemeyer |
| 2. The Hidden Staircase, 1930 | E. Stratemeyer | M. Wirt | E. Stratemeyer |
| 3. The Bungalow Mystery, 1930 | E. Stratemeyer | M. Wirt | E. Stratemeyer |
| 4. The Mystery at Lilac Inn, 1930 | H.S. Adams | M. Wirt | H.S. Adams |
| 5. The Secret at Shadow Ranch, 1931 | H.S. Adams | M. Wirt | H.S. Adams |
| 6. The Secret of Red Gate Farm, 1931 | E. Squier | M. Wirt/H.S. Adams | H.S. Adams |
| 7. The Clue in the Diary, 1932 | E. Squier | M. Wirt/H.S. Adams | H.S. Adams |
| 8. Nancy's Mysterious Letter, 1932 | E. Squier | W. Karig | H.S. Adams |
| 9. The Sign of the Twisted Candles, 1933 | H.S. Adams | W. Karig/H.S. Adams | H.S. Adams |
| 10. The Password to Larkspur Lane, 1933 | H.S. Adams | W. Karig | H.S. Adams |
| 11. The Clue of the Broken Locket, 1934 | E. Squier | M. Wirt | H.S. Adams |
| 12. The Message in the Hollow Oak, 1935 | E. Squier | M. Wirt | H.S. Adams |
| 13. The Mystery of the Ivory Charm, 1936 | E. Squier | M. Wirt | H.S. Adams |
| 14. The Whispering Statue, 1937 | E. Squier | M. Wirt | H.S. Adams |
| 15. The Haunted Bridge, 1937 | H.S. Adams | M. Wirt | H.S. Adams |
| 16. The Clue of the Tapping Heels, 1939 | E. Squier | M. Wirt | H.S. Adams |
| 17 The Mystery of the Brass-Bound Trunk, 1940 | H.S. Adams | M. Wirt | H.S. Adams |
| 18. The Mystery at the Moss-Covered Mansion, 1941 | E. Squier | M. Wirt | H.S. Adams |
| 19. The Quest of the Missing Map, 1942 | H.S. Adams | M. Wirt | H.S. Adams |
| 20. The Clue in the Jewel Box, 1943 | H.S. Adams | M. Wirt | H.S. Adams |
| 21. The Secret in the Old Attic, 1944 | H.S. Adams | M. Wirt | H.S. Adams |
| 22. The Clue in the Crumbling Wall, 1945 | H.S. Adams | M. Wirt | H.S. Adams |
| 23. The Mystery of the Tolling Bell, 1946 | H.S. Adams | M. Wirt | H.S. Adams |
| 24. The Clue in the Old Album, 1947 | H.S. Adams | M. Wirt | H.S. Adams |
| 25. The Ghost of Blackwood Hall, 1948 | H.S. Adams | M. Wirt | H.S. Adams |
| 26. The Clue of the Leaning Chimney, 1949 | H.S. Adams | G. Waller/H.S. Adams | H.S. Adams |
| 27. The Secret of the Wooden Lady, 1950 | H.S. Adams | M. Scherf | H.S. Adams |
| 28. The Clue of the Black Keys, 1951 | H.S. Adams | W. Rankin/H.S. Adams | H.S. Adams |
| 29. The Mystery at the Ski Jump, 1952 | H.S. Adams | A. Sasse | H.S. Adams |
| 30. The Clue of the Velvet Mask, 1953 | A. Svenson | M. Wirt/H.S. Adams | H.S. Adams |
| 31. The Ringmaster's Secret, 1953 | H.S. Adams | H.S. Adams | H.S. Adams |
| 32. The Scarlet Slipper Mystery, 1954 | H.S. Adams | C. Strong | H.S. Adams |
| 33. The Witch Tree Symbol, 1955 | H.S. Adams | H.S. Adams | H.S. Adams |
| 34. The Hidden Window Mystery, 1956 | P. Doll/H.S. Adams | H.S. Adams | H.S. Adams |
| 35. The Haunted Showboat, 1957 | H.S. Adams | H.S. Adams | J. Dunn/J. Sanderson |
| 36The Secret of the Golden Pavilion, 1959 | H.S. Adams | H.S. Adams | J. Dunn/J. Sanderson |
| 37. The Clue in the Old Stagecoach, 1960 | H.S. Adams | H.S. Adams | H.S. Adams |
| 38. The Mystery of the Fire Dragon, 1961 | H.S. Adams | H.S. Adams | H.S. Adams |
| 39. The Clue of the Dancing Puppet, 1962 | H.S. Adams | H.S. Adams | H.S. Adams |
| 40. The Moonstone Castle Mystery, 1963 | H.S. Adams | H.S. Adams | H.S. Adams |
| 41. The Clue of the Whistling Bagpipes, 1964 | H.S. Adams | H.S. Adams | H.S. Adams |
| 42. The Phantom of Pine Hill, 1965 | H.S. Adams | H.S. Adams | H.S. Adams |
| 43. The Mystery of the 99 Steps, 1966 | H.S. Adams | H.S. Adams | H.S. Adams |
| 44. The Clue in the Crossword Cipher, 1967 | H.S. Adams | H.S. Adams | H.S. Adams |
| 45. The Spider Sapphire Mystery, 1968 | H.S. Adams | H.S. Adams | H.S. Adams |
| 46. The Invisible Intruder, 1969 | H.S. Adams | H.S. Adams | H.S. Adams |
| 47. The Mysterious Mannequin, 1970 | H.S. Adams | H.S. Adams | H.S. Adams |
| 48. The Crooked Banister, 1971 | H.S. Adams | H.S. Adams | H.S. Adams |
| 49. The Secret of Mirror Bay, 1972 | H.S. Adams | H.S. Adams | H.S. Adams |
| 50. The Double Jinx Mystery, 1973 | H.S. Adams | H.S. Adams | H.S. Adams |
| 51. Mystery of the Glowing Eye, 1974 | H.S. Adams | H.S. Adams | H.S. Adams |
| 52. The Secret of the Forgotten City, 1975 | H.S. Adams | H.S. Adams | H.S. Adams |
| 53. The Sky Phantom, 1976 | H.S. Adams | H.S. Adams | H.S. Adams |
| 54. The Strange Message in the Parchment, 1977 | H.S. Adams | H.S. Adams | H.S. Adams |
| 55. Mystery of Crocodile Island, 1978 | H.S. Adams | H.S. Adams | H.S. Adams |
| 56. The Thirteenth Pearl, 1979 | H.S. Adams | H.S. Adams | H.S. Adams |
