The Tower Treasure
Franklin W. Dixon
The Hardy Boys (1)
The House on the Cliff
The Hardy Boys (2)
The Secret of the Old Mill
The Hardy Boys (3)
The Missing Chums
The Hardy Boys (4)
Hunting for Hidden Gold
The Hardy Boys (5)
The Shore Road Mystery
The Hardy Boys (6)
The Secret of the Caves
The Hardy Boys (7)
The Mystery of Cabin Island
The Hardy Boys (8)
The Hardy Boys: The Great Airport Mystery
The Hardy Boys (9)
What Happened at Midnight
The Hardy Boys (10)
While the Clock Ticked
The Hardy Boys (11)
Hardy Boys 12: Footprints Under the Window
The Hardy Boys Mystery Stories (12)
The Mark on the Door
The Hardy Boys (13)
Hardy Boys 14: The Hidden Harbor Mystery
The Hardy Boys Mystery Stories (14)
The Sinister Signpost
The Hardy Boys (15)
A Figure in Hiding
Franklin W. Dixon & Stratemeyer Stratemeyer Syndicate
The Hardy Boys (16)
The Secret Warning
The Hardy Boys (17)
The Twisted Claw
The Hardy Boys (18)
The Disappearing Floor
The Hardy Boys (19)
Hardy Boys 20: Mystery of the Flying Express
The Hardy Boys Mystery Stories (20)
The Clue of the Broken Blade
The Hardy Boys (21)
The Flickering Torch Mystery
The Hardy Boys (22)
The Melted Coins
The Hardy Boys (23)
The Short-Wave Mystery
The Hardy Boys (24)
Hardy Boys 25: The Secret Panel
The Hardy Boys Mystery Stories (25)
Hardy Boys 26: The Phantom Freighter
The Hardy Boys Mystery Stories (26)
The Secret of Skull Mountain
The Hardy Boys (27)
The Sign of the Crooked Arrow
The Hardy Boys (28)
The Secret of the Lost Tunnel
The Hardy Boys (29)
The Wailing Siren Mystery
The Hardy Boys (30)
The Secret of Wildcat Swamp
The Hardy Boys (31)
The Crisscross Shadow
The Hardy Boys (32)
The Yellow Feather Mystery
The Hardy Boys (33)
The Hooded Hawk Mystery
The Hardy Boys (34)
The Clue in the Embers
The Hardy Boys (35)
The Secret of Pirates' Hill
The Hardy Boys (36)
The Ghost at Skeleton Rock
The Hardy Boys (37)
Mystery at Devil's Paw
The Hardy Boys (38)
The Mystery of the Chinese Junk
The Hardy Boys (39)
Mystery of the Desert Giant
The Hardy Boys (40)
The Clue of the Screeching Owl
The Hardy Boys (41)
The Viking Symbol Mystery
The Hardy Boys (42)
The Mystery of the Aztec Warrior
The Hardy Boys (43)
The Haunted Fort
Franklin W. Dixon & Russell H. Tandy
The Hardy Boys (44)
The Mystery of the Spiral Bridge
The Hardy Boys (45)
Mystery of the Whale Tattoo
The Hardy Boys (47)
The Arctic Patrol Mystery
The Hardy Boys (48)
The Bombay Boomerang
The Hardy Boys (49)
Danger on Vampire Trail
The Hardy Boys (50)
The Masked Monkey
The Hardy Boys (51)
The Shattered Helmet
The Hardy Boys (52)
The Clue of the Hissing Serpent
The Hardy Boys (53)
The Mysterious Caravan
The Hardy Boys (54)
The Witchmaster's Key
The Hardy Boys (55)
The Firebird Rocket
The Hardy Boys (57)
The Sting of the Scorpion
The Hardy Boys (58)
Night of the Werewolf
The Hardy Boys (59)
Mystery of the Samurai Sword
The Hardy Boys (60)
The Pentagon Spy
The Hardy Boys (61)
The Apeman's Secret
The Hardy Boys (62)