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Hardy Boys 16: a Figure in Hiding

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Hardy Boys 17: the Secret Warning

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Hardy Boys 18: the Twisted Claw

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Hardy Boys 19: the Disappearing Floor

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Hardy Boys 25: the Secret Panel

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Hardy Boys 26: the Phantom Freighter

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Hardy Boys 27: the Secret of Skull Mountain

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Hardy Boys 28: the Sign of the Crooked Arrow

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Hardy Boys 33: The Yellow Feather Mystery

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Hardy Boys 34: The Hooded Hawk Mystery

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Hardy Boys 35: The Clue in the Embers

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Hardy Boys 36: the Secret of Pirates' Hill

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Hardy Boys 37: the Ghost at Skeleton Rock

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Hardy Boys 38: Mystery at Devil's Paw

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Hardy Boys 43: the Mystery of the Aztec Warrior

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Hardy Boys 44: the Haunted Fort

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Hardy Boys 45: the Mystery of the Spiral Bridge

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Hardy Boys 46: the Secret Agent on Flight 101

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Hardy Boys 47: Mystery of the Whale Tattoo

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Hardy Boys 52: the Shattered Helmet

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Hardy Boys 53: the Clue of the Hissing Serpent

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Hardy Boys 54: the Mysterious Caravan

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Hardy Boys 55: the Witchmaster's Key

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Hardy Boys 57: the Firebird Rocket

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