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The Invisible Island While picnicking on Squaw Island, Dink, Josh, and Ruth Rose find a hundred dollar bill, and when they return to explore further they find an entire cave full of money. The Jaguar's Jewel Dink, Josh, and Ruth Rose visit New York City! Dink's uncle is the curator of a museum with a dazzling new treasure--a statue of a jaguar cradling an emerald between its front paws. But when it's discovered that the emerald has been replaced with a fake, Dink's uncle is the chief suspect. He'll go to jail if Dink, Josh, and Ruth Rose can't uncover the real thief!