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gptkbp:notableBook
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gptkb:The_Wishing_Well
gptkb:The_Mystery_of_the_Stone_Tiger
gptkb:The_Green_Door
gptkb:Swamp_Island
gptkb:The_Secret_Pact
Danger at the Drawbridge
Hooting Owl Mystery
Saboteurs on the River
Tale of the Witch Doll
The Black Cat's Clue
The Clock Strikes Thirteen
The Cry at Midnight
The Golden Summer
The Indian Mound Mystery
The Locked Tower
The Secret at Loon Lake
The Secret of the Red Scarab
The Vanishing Houseboat
Voice from the Cave
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