01 The Tower Treasure (Brown):🕵🏻Vintage Hardy Boys Book
02 The House on the Cliff (Brown):🕵🏻Vintage Hardy Boys Book
08 The Mystery of Cabin Island (Brown):🕵🏻Vintage Hardy Boys Book
09 The Great Airport Mystery (Brown):🕵🏻Vintage Hardy Boys Book
10 What Happened at Midnight (Brown):🕵🏻Vintage Hardy Boys Book
12 Footprints Under the Window (Brown):🕵🏻Vintage Hardy Boys Book
13 The Mark on the Door (Brown):🕵🏻Vintage Hardy Boys Book
14 The Hidden Harbor Mystery (Brown):🕵🏻Vintage Hardy Boys Book
15 The Sinister Signpost (Brown):🕵🏻Vintage Hardy Boys Book
16 A Figure in Hiding (Brown):🕵🏻Vintage Hardy Boys Book
18 The Twisted Claw (1939-Dust):🕵🏻Vintage Hardy Boys Book
18 The Twisted Claw (Brown):🕵🏻Vintage Hardy Boys Book
19 Disappearing Floor (1940-Dust):🕵🏻Vintage Hardy Boys Book
19 The Disappearing Floor (Brown):🕵🏻Vintage Hardy Boys Book
2 The House on the Cliff (1959-Dust):🕵🏻Vintage Hardy Boys Book -a
20 The Mystery of the Flying Express (Brown):🕵🏻Vintage Hardy Boys Book
21 The Clue of the Broken Blade (Brown):🕵🏻Vintage Hardy Boys Book
23 The Melted Coins (Brown):🕵🏻Vintage Hardy Boys Book
24 The Short Wave Mystery (Brown):🕵🏻Vintage Hardy Boys Book
25 The Secret Panel (Brown):🕵🏻Vintage Hardy Boys Book
26 Phantom Freighter(1947-Dust):🕵🏻Vintage Hardy Boys Book
26 The Phantom Freighter (Brown):🕵🏻Vintage Hardy Boys Book
27 Secret of Skull Mountain (1948-Dust): The Hardy Boys Book
28 The Sign of the Crooked Arrow (Brown):🕵🏻Vintage Hardy Boys Book
