The Hardy Boys Mystery Stories was a series of books attributed to Franklin W. Dixon. Of the 58 titles published between 1927 and 1979, the initial 38 were revised (many of them extensively) between 1959 and 1973; these revised 38 titles and the remaining 20 titles published between 1959 and 1979 are now considered the canon of the Hardy Boys These books were published as unjacketed hardcovers by Grosset and Dunlap. This series was followed by a second series of titles published by Simon & Schuster between 1979 and 2004; the first eight of these titles were reissued by Grosset and Dunlap in 2005.
1. The Tower Treasure (1927; revised edition 1959)
2. The House on the Cliff (1927; revised edition 1959)
3. The Secret of the Old Mill (1927; revised edition 1962)
4. The Missing Chums (1927; revised edition 1962)
5. Hunting for Hidden Gold (1928; revised edition 1963)
6. The Shore Road Mystery (1928; revised edition 1964)
7. The Secret of the Caves (1929; revised edition 1965)
8. The Mystery of Cabin Island (1929; revised edition 1966)
9. The Great Airport Mystery (1930; revised edition 1965)
10. What Happened at Midnight (1931; revised edition 1967)
11. While the Clock Ticked (1932; revised edition 1962)
12. Footprints Under the Window (1933; revised edition 1962)
13. The Mark on the Door (1934; revised edition 1967)
14. The Hidden Harbor Mystery (1935; revised edition 1961)
15. The Sinister Sign Post (1936; revised edition [The Sinister Signpost] 1968)
16. A Figure in Hiding (1937; revised edition 1965)
17. The Secret Warning (1938; revised edition 1966)
18. The Twisted Claw (1939; revised edition 1969)
19. The Disappearing Floor (1940; revised edition 1964)
20. The Mystery of the Flying Express (1941; revised edition 1968)
21. The Clue of the Broken Blade (1942; revised edition 1969)
22. The Flickering Torch Mystery (1943; revised edition 1971)
23. The Melted Coins (1944; revised edition 1970)
24. The Short-Wave Mystery (1945; revised edition 1966)
25. The Secret Panel (1946; revised edition 1969)
26. The Phantom Freighter (1947; revised edition 1970)
27. The Secret of Skull Mountain (1948; revised edition 1966)
28. The Sign of the Crooked Arrow (1949; revised edition 1970)
29. The Secret of the Lost Tunnel (1950; revised edition 1968)
30. The Wailing Siren Mystery (1951; revised edition 1968)
31. The Secret of Wildcat Swamp (1952; revised edition 1969)
32. The Crisscross Shadow (1953; revised edition 1969)
33. The Yellow Feather Mystery (1953; revised edition 1971)
34. The Hooded Hawk Mystery (1954; revised edition 1971)
35. The Clue in the Embers (1955; revised edition 1972)
36. The Secret of Pirates’ Hill (1956; revised edition 1972)
37. The Ghost at Skeleton Rock (1957; revised edition 1966)
38. The Mystery at Devil’s Paw (1959; revised edition 1973)
39. The Mystery of the Chinese Junk (1960)
40. Mystery of the Desert Giant (1961)
41. The Clue of the Screeching Owl (1962)
42. The Viking Symbol Mystery (1963)
43. The Mystery of the Aztec Warrior (1964)
44. The Haunted Fort (1965)
45. The Mystery of the Spiral Bridge (1966)
46. The Secret Agent on Flight 101 (1967)
47. Mystery of the Whale Tattoo (1968)
48. The Arctic Patrol Mystery (1969)
49. The Bombay Boomerang (1970)
50. Danger on Vampire Trail (1971)
51. The Masked Monkey (1972)
52. The Shattered Helmet (1973)
53. The Clue of the Hissing Serpent (1974)
54. The Mysterious Caravan (1975)
55. The Witchmaster’s Key (1976)
56. The Jungle Pyramid (1977)
57. The Firebird Rocket (1978)
58. The Sting of the Scorpion (1979)
59. Night of the Werewolf (2005; originally published by Wanderer Books in 1979)
60. Mystery of the Samurai Sword (2005; originally published by Wanderer Books in 1979)
61. The Pentagon Spy (2005; originally published by Wanderer Books in 1980)
62. The Apeman’s Secret (2005; originally published by Wanderer Books in 1980)
63. The Mummy Case (2005; originally published by Wanderer Books in 1980)
64. Mystery of Smugglers Cove (2005; originally published by Wanderer Books in 1980)
65. The Stone Idol (2005; originally published by Wanderer Books in 1981)
66. The Vanishing Thieves (2005; originally published by Wanderer Books in 1981)