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Secret Codes

  1. The Riddle Club through the holidays
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    Alice Dale Hardy
    The Riddle Club through the holidays

  2. Merirosvon Testamentti

    Robert Louis Stevenson

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    Robert Louis Stevenson
    Merirosvon Testamentti
  3. Three Sides of Paradise Green
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    Augusta Huiell Seaman
    Three Sides of Paradise Green

  4. Clutterbuck's Treasure

    Yazar Bilinmiyor

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    Yazar Bilinmiyor
    Clutterbuck's Treasure
  5. Mystery Wings
A Mystery Story for Boys
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    Roy J. Snell
    Mystery Wings
A Mystery Story for Boys
  6. The Mystery of the Secret Band
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    Edith Lavell
    The Mystery of the Secret Band
  7. The Crimson Thread: An Adventure Story for Girls
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    Roy J. Snell
    The Crimson Thread: An Adventure Story for Girls

  8. The German Spy System from Within

    Anonymous

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    Anonymous
    The German Spy System from Within
  9. General Washington's spies on Long Island and in New York
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    Morton Pennypacker
    General Washington's spies on Long Island and in New York
  10. The Riddle Club at Sunrise Beach
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    Alice Dale Hardy
    The Riddle Club at Sunrise Beach

  11. The Cryptogram: A Novel

    James De Mille

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    James De Mille
    The Cryptogram: A Novel

  12. Ashton-Kirk, Criminologist

    John T. McIntyre

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    John T. McIntyre
    Ashton-Kirk, Criminologist

  13. Ciphers For the Little Folks
A Method of Teaching the Greatest Work of Sir Francis Bacon

    Dorothy Crain

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    Dorothy Crain
    Ciphers For the Little Folks
A Method of Teaching the Greatest Work of Sir Francis Bacon
  14. Madge Morton's Secret
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    Amy D. V. Chalmers
    Madge Morton's Secret

  15. The Secret Wireless; Or, The Spy Hunt of the Camp Brady Patrol

    Lewis E. Theiss

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    Lewis E. Theiss
    The Secret Wireless; Or, The Spy Hunt of the Camp Brady Patrol

  16. Room Number 3, and Other Detective Stories

    Anna Katharine Green

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    Anna Katharine Green
    Room Number 3, and Other Detective Stories

  17. The Radio Boys with the Revenue Guards

    Gerald Breckenridge

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    Gerald Breckenridge
    The Radio Boys with the Revenue Guards

  18. Les règles de Cicco Simonetta pour le déchiffrement des écritures secrètes

    Cicco Simonetta

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    Cicco Simonetta
    Les règles de Cicco Simonetta pour le déchiffrement des écritures secrètes

  19. Ashton-Kirk, Investigator

    John T. McIntyre

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    John T. McIntyre
    Ashton-Kirk, Investigator

  20. The Great Secret

    E. Phillips Oppenheim

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    E. Phillips Oppenheim
    The Great Secret
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