01. The Sunken Treasure
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September 1, 1949
02. The Secret Cave
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September 8, 1949
03. The Eagle's Nest
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September 15, 1949
04. The Chase Across the Desert
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September 22, 1949
05. The Tiger Hunt
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September 29, 1949
06. The Crocodile Pool
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October 6, 1949
07. The Magic Flute
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October 13, 1949
08. The Kangaroo Boxing Match
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October 20, 1949
09. The North Pole Frolics
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October 27, 1949
10. The Circus Comes to Town
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November 3, 1949
11. The Great Circus Robbery
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November 10, 1949
12. The Show Goes On
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November 17, 1949
13. The Big Blow Up
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November 24, 1949
14. The Sealed Envelope
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December 1, 1949
15. The House of Mystery
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December 8, 1949
16. The Lost Trail
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December 15, 1949
17. The Baby Carriage Mystery
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December 22, 1949
18. The Forged Letter
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December 29, 1949
19. The Hidden Microphone
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January 5, 1950
20. The Rajah's Boy
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January 12, 1950
21. The Stowaway
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January 19, 1950
22. The Strange Pit
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January 26, 1950
23. The Secret Submarine Base
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February 2, 1950
24. The Big Fight
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February 9, 1950
25. The Submarine Captain
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February 16, 1950
26. Hero's Reward
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February 23, 1950
27. The Great Prison Break
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March 2, 1950
28. The Junior F.B.I.
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March 9, 1950
29. The Mechanical Monster
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March 16, 1950
30. The Kidnapped Professor
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March 23, 1950
31. The Bubble Gum Mystery
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March 30, 1950
32. The Sky Pirates
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April 6, 1950
33. The Magic Paint
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April 13, 1950
34. The Strange Message
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April 20, 1950
35. The Menace from Mars
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April 27, 1950
36. The Atom Bomb
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May 4, 1950
37. The Wonders of Mars
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May 11, 1950
38. Captured
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May 18, 1950
39. The Great Air Battle
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May 25, 1950
40. The Mysterious Treasure
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June 1, 1950
41. The Crazy Scientist
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June 8, 1950
42. The Terror of the Cave
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June 15, 1950
43. The Thing?
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June 22, 1950
44. The Midnight Alarm
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June 29, 1950
45. The Cannibal Island
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July 6, 1950
46. Double Crossed
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July 13, 1950
47. Buried Treasure
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July 20, 1950
48. A Friend Is Lost
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July 27, 1950
49. Kidnapped
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August 3, 1950
50. The Space Ship
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August 10, 1950
51. The Frustrated Robbery
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August 17, 1950
52. A Magnificent Present
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August 24, 1950