004 The Missing Chums
Franklin W. Dixon
The Hardy Boys Mystery Stories (4)
007 The Secret of the Caves
The Hardy Boys Mystery Stories (7)
005 Hunting for Hidden Gold
The Hardy Boys Mystery Stories (5)
006 The Shore Road Mystery
The Hardy Boys Mystery Stories (6)
008 The Mystery of Cabin Island
The Hardy Boys Mystery Stories (8)
009 The Great Airport Mystery
The Hardy Boys Mystery Stories (9)
010 What Happened at Midnight
The Hardy Boys Mystery Stories (10)
011 While the Clock Ticked
The Hardy Boys Mystery Stories (11)
014 The Hidden Harbor Mystery
The Hardy Boys Mystery Stories (14)
013 The Mark on the Door
The Hardy Boys Mystery Stories (13)
012 Footprints Under the Window
The Hardy Boys Mystery Stories (12)
015 The Sinister Signpost
The Hardy Boys Mystery Stories (15)
017 The Secret Warning
The Hardy Boys Mystery Stories (17)
018 The Twisted Claw
The Hardy Boys Mystery Stories (18)
016 A Figure in Hiding
The Hardy Boys Mystery Stories (16)
019 The Disappearing Floor
The Hardy Boys Mystery Stories (19)
020 Mystery of the Flying Express
The Hardy Boys Mystery Stories (20)
021 The Clue of the Broken Blade
The Hardy Boys Mystery Stories (21)
022 The Flickering Torch Mystery
The Hardy Boys Mystery Stories (22)
023 The Melted Coins
The Hardy Boys Mystery Stories (23)
024 The Short-Wave Mystery
The Hardy Boys Mystery Stories (24)
025 The Secret Panel
The Hardy Boys Mystery Stories (25)
026 The Phantom Freighter
The Hardy Boys Mystery Stories (26)
027 The Secret of Skull Mountain
The Hardy Boys Mystery Stories (27)
031 The Secret of Wildcat Swamp
The Hardy Boys Mystery Stories (31)
028 The Sign of the Crooked Arrow
The Hardy Boys Mystery Stories (28)
029 The Secret of the Lost Tunnel
The Hardy Boys Mystery Stories (29)
030 The Wailing Siren Mystery
The Hardy Boys Mystery Stories (30)
036 The Secret of Pirates' Hill
The Hardy Boys Mystery Stories (36)
033 The Yellow Feather Mystery
The Hardy Boys Mystery Stories (33)
032 The Crisscross Shadow
The Hardy Boys Mystery Stories (32)
035 The Clue in the Embers
The Hardy Boys Mystery Stories (35)
034 The Hooded Hawk Mystery
The Hardy Boys Mystery Stories (34)
037 The Ghost at Skeleton Rock
The Hardy Boys Mystery Stories (37)
039 The Mystery of the Chinese Junk
The Hardy Boys Mystery Stories (39)
038 Mystery at Devil's Paw
The Hardy Boys Mystery Stories (38)
040 Mystery of the Desert Giant
The Hardy Boys Mystery Stories (40)
041 The Clue of the Screeching Owl
The Hardy Boys Mystery Stories (41)
042 The Viking Symbol Mystery
The Hardy Boys Mystery Stories (42)
043 The Mystery of the Aztec Warrior
The Hardy Boys Mystery Stories (43)
044 The Haunted Fort
The Hardy Boys Mystery Stories (44)
045 The Mystery of the Spiral Bridge
The Hardy Boys Mystery Stories (45)
047 Mystery of the Whale Tattoo
The Hardy Boys Mystery Stories (47)
046 The Secret Agent on Flight 101
The Hardy Boys Mystery Stories (46)
048 The Arctic Patrol Mystery
The Hardy Boys Mystery Stories (48)
050 Danger on Vampire Trail
The Hardy Boys Mystery Stories (50)
049 The Bombay Boomerang
The Hardy Boys Mystery Stories (49)
051 The Masked Monkey
052 The Shattered Helmet
The Hardy Boys Mystery Stories (52)
053 The Clue of the Hissing Serpent
The Hardy Boys Mystery Stories (53)
054 The Mysterious Caravan
The Hardy Boys Mystery Stories (54)
056 The Jungle Pyramid
The Hardy Boys Mystery Stories (56)
055 The Witchmaster's Key
The Hardy Boys Mystery Stories (55)
057 The Firebird Rocket
The Hardy Boys Mystery Stories (57)
059 Night of the Werewolf
The Hardy Boys Mystery Stories (59)
060 Mystery of the Samurai Sword
The Hardy Boys Mystery Stories (60)
058 The Sting of the Scorpion
The Hardy Boys Mystery Stories (58)
061 The Pentagon Spy
The Hardy Boys Mystery Stories (61)
062 The Apeman's Secret
The Hardy Boys Mystery Stories (62)
063 The Mummy Case
The Hardy Boys Mystery Stories (63)