 | #17 The Mystery Of The Uninvited Guest --1977
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| #18 The Mystery Of The Phantom Grasshopper --1977
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| #19 The Mystery Of The Unseen Treasure --1977
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| #20 The Mystery Off Old Telegraph Road --1978
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| #21 The Mystery Of The Castaway Children --1978
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| #22 The Mystery at Mead's Mountain --1978
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| #23 The Mystery Of The Queen's Necklace --1979
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| #24 The Mystery At Saratoga --1979
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| #25 The Sasquatch Mystery --1979
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| #26 The Mystery Of The Headless Horseman --1979
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| #27 The Mystery Of The Ghostly Galleon --1979
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| #28 The Hudson River Mystery --1979
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| #29 The Mystery Of The Velvet Gown --1980
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| #30 The Mystery Of The Midnight Marauder --1980
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| #31 The Mystery At Maypenny's --1980
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| #32 The Mystery Of The Whispering Witch --1980
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| #33 The Mystery Of The Vanishing Victim ...1980
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| #34 The Mystery Of The Missing Millionaire --1980
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| #35 The Mystery Of The Memorial Day Fire --1984
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| #36 The Mystery Of The Antique Doll --1984
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| #37 The Pet Show Mystery --1985
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| #38 The Indian Burial Ground Mystery --1985
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| #39 The Mystery Of The Galloping Ghost --1986
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