Hardy Boys
28. The Sign of the Crooked Arrow (1949) (as by Franklin W Dixon)
29. The Secret of the Lost Tunnel (1950) (as by Franklin W Dixon)
30. The Wailing Siren Mystery (1951) (as by Franklin W Dixon)
45. Mystery of the Spiral Bridge (1965) (as by Franklin W Dixon)
48. The Arctic Patrol Mystery (1969) (as by Franklin W Dixon)
50. Danger on Vampire Trail (1971) (as by Franklin W Dixon)
52. The Shattered Helmet (1973) (as by Franklin W Dixon)
53. The Clue of the Hissing Serpent (1974) (as by Franklin W Dixon)
54. The Mysterious Caravan (1975) (as by Franklin W Dixon)