Yellow Feather Mystery
Franklin W. Dixon
Hardy Boys Original (33)
Witness to Murder
Hardy Boys Casefiles (20)
Without a Trace
Hardy Boys Casefiles (31)
While the Clock Ticked
Hardy Boys Original (11)
What Happened at Midnight
Hardy Boys Original (10)
The Wailing Siren Mystery
Hardy Boys Original (30)
The Viking Symbol Mystery
Hardy Boys Original (42)
Twisted Claw
Hardy Boys Original (18)
Trouble in the Pipeline
Hardy Boys Casefiles (26)
Tower Treasure
Hardy Boys Original (1)
Too Many Traitors
Hardy Boys Casefiles (14)
Three-Ring Terror
Hardy Boys Original (111)
Thick as Thieves
Hardy Boys Casefiles (29)
Tagged for Terror
Hardy Boys Casefiles (76)
Survival Run
Hardy Boys Casefiles (77)
Street Spies
Hardy Boys Casefiles (21)
Strategic Moves
Hardy Boys Casefiles (43)
Sting of the Scorpion
Hardy Boys Original (58)
Sinister Signpost
Hardy Boys Original (15)
The Sign of the Crooked Arrow
Hardy Boys Original (28)
Short-Wave Mystery
Hardy Boys Original (24)
The Shore Road Mystery
Hardy Boys Original (6)
See No Evil
Hardy Boys Casefiles (8)
The Secret Warning
Hardy Boys Original (17)
Secret Panel
Hardy Boys Original (25)
The Secret of Wildcat Swamp
Hardy Boys Original (31)
Secret of the Lost Tunnel
Hardy Boys Original (29)
The Secret of the Caves
Hardy Boys Original (7)
The Secret of Skull Mountain
Hardy Boys Original (27)
The Secret of Pirates' Hill
Hardy Boys Original (36)
The Secret Agent on Flight 101
Hardy Boys Original (46)
Scene of the Crime
Hardy Boys Casefiles (24)
Running on Empty
Hardy Boys Casefiles (36)
The Phantom Freighter
Hardy Boys Original (26)
Perfect Getaway
Hardy Boys Casefiles (12)
The Pacific Conspiracy
Hardy Boys Casefiles (78)
The Number File
Hardy Boys Casefiles (17)
Nowhere to Run
Hardy Boys Casefiles (27)
Nightmare in Angel City
Hardy Boys Casefiles (19)
Mystery of the Whale Tattoo
Hardy Boys Original (47)
Mystery of the Spiral Bridge
Hardy Boys Original (45)
Mystery of the Flying Express
Hardy Boys Original (20)
Mystery of the Desert Giant
Hardy Boys Original (40)
Mystery of the Chinese Junk
Hardy Boys Original (39)
Mystery of the Aztec Warrior
Hardy Boys Original (43)
Mystery of Cabin Island
Hardy Boys Original (8)
Mystery at Devil's Paw
Hardy Boys Original (38)
The Missing Chums
Hardy Boys Original (4)
Melted Coins
Hardy Boys Original (23)
Mark on the Door
Hardy Boys Original (13)
Line of Fire
Hardy Boys Casefiles (16)
The Lazarus Plot
Hardy Boys Casefiles (4)
The Last Laugh
Hardy Boys Casefiles (42)
A Killing in the Market
Hardy Boys Casefiles (18)
The Jungle Pyramid
Hardy Boys Original (56)
The Infinity Clue
Hardy Boys Original (70)
Hunting for Hidden Gold
Hardy Boys Original (5)
The House on the Cliff
Hardy Boys Original (2)
Hostages of Hate
Hardy Boys Casefiles (10)
Hooded Hawk Mystery
Hardy Boys Original (34)