- Adventure
- Crime

Challenge of the Yukon
629 episodes Aired 1938-1955
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1. Meeting the Terms of a Contract
   15mins Aired 1943-07-15
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2. Till a Man's Proved Dead
   15mins Aired 1943-07-22
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3. A Swindler Swindled
   15mins Aired 1943-07-29
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4. A Footprint in Leather
   15mins Aired 1943-08-12
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5. Caught by a Button
   15mins Aired 1943-08-19
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6. The Last Days of a Freight Line
   15mins Aired 1943-08-26
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7. A Swill O' Gunpowder
   15mins Aired 1943-09-09
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8. King's Ransom
   15mins Aired 1943-09-16
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9. Murder on Train Time
   15mins Aired 1943-09-23
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10. A Previewed Confession
    15mins Aired 1943-09-30
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11. Attempted Manslaughter
    15mins Aired 1943-10-07
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12. Lantern Rock
    15mins Aired 1943-10-14
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13. The Ring on His Finger
    15mins Aired 1943-10-21
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14. The Tell-Tale Bullet
    14mins Aired 1943-10-28
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15. A Date to Remember
    15mins Aired 1943-11-04
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16. Belated Revenge
    14mins Aired 1943-11-11
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17. Return to the Crime
    14mins Aired 1943-11-18
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18. King Spots Murder
    15mins Aired 1943-11-25
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19. Self Defense or Murder
    14mins Aired 1943-12-02
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20. By Hook or by Crook
    15mins Aired 1943-12-09
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21. The Eleventh Hour
    15mins Aired 1943-12-16
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22. Murder in ABC's
    13mins Aired 1943-12-23
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23. No Escape for a Murderer
    15mins Aired 1943-12-30
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24. Revenge in the Yukon
    15mins Aired 1944-01-06
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25. Forgery and Murder
    14mins Aired 1944-01-13
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26. Macbeth's Bloody Knife
    15mins Aired 1944-01-20
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27. Wolf Pack
    15mins Aired 1944-01-27
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28. Cabin on the Trail
    15mins Aired 1944-02-03
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29. Lady Luck Claim
    14mins Aired 1944-02-10
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30. As a Man Thinketh
    15mins Aired 1944-02-17
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31. The Hannagan Brothers
    14mins Aired 1944-02-24
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32. The Great Dog King
    14mins Aired 1944-03-02
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33. The Vallera Diamond
    14mins Aired 1944-03-09
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34. King Meets Soapy Smith
    14mins Aired 1944-03-23
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35. A Pack of Bacon
    14mins Aired 1944-03-30
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36. Edward Carson
    14mins Aired 1944-04-06
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37. The Plaid Coat
    14mins Aired 1944-04-13
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38. Belle Brady's Gesture
    14mins Aired 1944-04-20
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39. Preston's Right Hand Man
    14mins Aired 1944-04-27
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40. A Woman Scorned
    14mins Aired 1944-05-04
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41. Outlaw Dog
    14mins Aired 1944-05-11
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42. The Outlaw's Nemesis
    15mins Aired 1944-05-18
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43. The Idol
    14mins Aired 1944-05-25
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44. A Joke Led to the Gallows
    14mins Aired 1944-06-01
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45. Reverend Jim
    14mins Aired 1944-06-08
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46. The Man from Missouri
    15mins Aired 1944-06-15
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47. Killing Sullivan
    14mins Aired 1944-06-22
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48. The Duke Bows to a King
    14mins Aired 1944-06-29
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49. The Lady's Locket
    15mins Aired 1944-07-13
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50. Lucky Walters
    15mins Aired 1944-07-20
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51. Of Dogs and Horses
    15mins Aired 1944-07-27
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52. Maintiens Le Droit
    15mins Aired 1944-08-03
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53. The Plan That Failed
    15mins Aired 1944-08-10
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54. King Breaks the Wheel of Fortune
    15mins Aired 1944-08-17
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55. A Rendezvous
    15mins Aired 1944-08-24
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56. Smokey
    15mins Aired 1944-08-31
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57. A Frame-Up That Failed
    14mins Aired 1944-09-07
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58. Death and the Flickering Eye
    14mins Aired 1944-09-14
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59. A Masquerade
    14mins Aired 1944-09-21
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60. Eyes for the Blind
    14mins Aired 1944-09-28
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61. King Saves the Day
    14mins Aired 1944-10-12
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62. Suzanne Verrill
    15mins Aired 1944-10-19
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63. Case History of a Mountie
    14mins Aired 1944-10-26
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64. Seahorse City's Editor
    14mins Aired 1944-11-02
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65. King Found the Clue
    14mins Aired 1944-11-09
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66. Florabelle's Adventure
    14mins Aired 1944-11-16
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67. Paula Buchanan
    14mins Aired 1944-11-23
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68. King Meets a Grizzly
    14mins Aired 1944-11-30
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69. Trial by Fire
    14mins Aired 1944-12-07
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70. One Went to the Gallows
    14mins Aired 1944-12-14
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71. How Connelly Paid the Law
    14mins Aired 1944-12-21
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72. Preston's Dilemma
    14mins Aired 1944-12-28
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73. Trap for a Mountie
    14mins Aired 1945-01-04
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74. Manhunt
    14mins Aired 1945-01-13
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75. Murder on the Trail
    14mins Aired 1945-01-18
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76. The Fugitives
    15mins Aired 1945-01-25
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77. King Led the Way
    15mins Aired 1945-01-30
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78. An Unlucky Gambler
    14mins Aired 1945-02-06
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79. Guilty by Proxy
    15mins Aired 1945-02-13
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80. Wilderness Girl
    15mins Aired 1945-02-20
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81. Colinns Canyon
    15mins Aired 1945-02-27
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82. Trail Scent
    15mins Aired 1945-03-06
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83. The Dog-Head Nugget
    15mins Aired 1945-03-13
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84. Silver Point Renegades
    15mins Aired 1945-03-20
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85. Landslide
    15mins Aired 1945-03-27
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86. Blizzard in the Yukon
    15mins Aired 1945-04-03
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87. Back Door of the Mountain
    15mins Aired 1945-04-10
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88. Her Weight in Gold
    15mins Aired 1945-04-24
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89. Spawn of the North
    14mins Aired 1945-05-01
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90. The Dog Team Race
    15mins Aired 1945-05-08
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91. God of the Mountain
    14mins Aired 1945-05-15
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92. A Boy and a Dog
    15mins Aired 1945-05-22
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93. Ambush
    15mins Aired 1945-05-29
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94. Trap Robber
    15mins Aired 1945-06-05
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95. Medicine Man
    14mins Aired 1945-06-12
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96. Thunder
    14mins Aired 1945-06-19
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97. Recovered Claim
    14mins Aired 1945-06-26
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98. Old Tom
    15mins Aired 1945-07-03
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99. The Brass Button
    14mins Aired 1945-07-10
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100. Escape
     15mins Aired 1945-07-17
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101. Skipper
     15mins Aired 1945-07-24
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102. The Chase
     15mins Aired 1945-07-31
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103. The Map
     15mins Aired 1945-08-07
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104. Arctic Chase
     15mins Aired 1945-08-14
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105. Maw Baker's Pies
     14mins Aired 1945-08-21
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106. Magnamimous Ghost
     15mins Aired 1945-08-28
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107. Bear Trap
     15mins Aired 1945-09-04
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108. Alibi
     14mins Aired 1945-09-11
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109. Big Bill
     15mins Aired 1945-09-18
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110. The Red Mitten
     15mins Aired 1945-09-25
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111. Chechako
     15mins Aired 1945-10-02
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112. The Black Bear
     15mins Aired 1945-10-09
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113. Scorpion Sam's Gold
     14mins Aired 1945-10-16
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114. Dynamite Provides
     15mins Aired 1945-10-23
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115. The Trail
     15mins Aired 1945-10-30
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116. The Last Laugh
     14mins Aired 1945-11-06
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117. The Irish Wolf Hound
     14mins Aired 1945-11-13
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118. Father Donovan
     14mins Aired 1945-11-20
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119. Long Fall Canyon
     14mins Aired 1945-11-27
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120. The Bonanza Belle
     15mins Aired 1945-12-04
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121. The Dachshund
     15mins Aired 1945-12-11
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122. Christmas Present
     14mins Aired 1945-12-18
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123. New Year's Eve
     15mins Aired 1945-12-29
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124. The Grave Robbers
     15mins Aired 1946-01-05
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125. The Mail Team
     15mins Aired 1946-01-10
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126. Preston Takes Over
     14mins Aired 1946-01-17
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127. Jane Gets Her Man
     15mins Aired 1946-01-24
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128. The Blind Man
     14mins Aired 1946-01-31
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129. The Cure
     14mins Aired 1946-02-14
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130. Mabel
     15mins Aired 1946-02-21
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131. The Shamaness
     15mins Aired 1946-02-28
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132. Mad Wolf
     14mins Aired 1946-03-07
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133. The Bully
     15mins Aired 1946-03-14
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134. Hold Up
     15mins Aired 1946-03-21
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135. The Rivals
     15mins Aired 1946-03-28
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136. The Return of Pete Hunt
     15mins Aired 1946-04-04
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137. Ned's Wife
     15mins Aired 1946-04-11
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138. Rex
     15mins Aired 1946-04-18
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139. Torn Parka
     15mins Aired 1946-04-25
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140. Balmy Bill
     15mins Aired 1946-05-02
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141. Eskimo Justice
     15mins Aired 1946-05-09
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142. Shrimp Togan
     15mins Aired 1946-05-16
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143. Chap
     15mins Aired 1946-05-23
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144. The Mitten
     15mins Aired 1946-05-30
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145. Annie Jones
     14mins Aired 1946-06-06
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146. The Great Dane
     15mins Aired 1946-06-13
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147. How Preston Got King
     14mins Aired 1946-06-20
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148. The Sharp Shooter
     15mins Aired 1946-06-27
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149. The Pup That Ate Too Much
     15mins Aired 1946-07-04
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150. Flash
     15mins Aired 1946-07-11
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151. Preston Breaks a Rule
     15mins Aired 1946-07-18
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152. Beaver Dam
     15mins Aired 1946-07-25
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153. The Silver Fox
     15mins Aired 1946-08-01
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154. The Mute Speaks
     15mins Aired 1946-08-15
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155. Grizzly Martin
     14mins Aired 1946-08-22
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156. Preston Goes to Jail
     15mins Aired 1946-08-29
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157. The Epidemic
     14mins Aired 1946-09-12
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158. Preston Sells King
     14mins Aired 1946-09-19
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159. Blind Man's Claim
     14mins Aired 1946-09-26
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160. The Wooden Case
     14mins Aired 1946-10-03
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161. Trap in the Mountains
     14mins Aired 1946-11-07
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162. The Choice
     14mins Aired 1946-11-14
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163. The Cat Collar
     14mins Aired 1946-11-21
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164. Thanksgiving in the Wilderness
     14mins Aired 1946-11-28
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165. The Watch Dog
     14mins Aired 1946-12-05
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166. The Dog Fight
     14mins Aired 1946-12-12
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167. Christmas Present
     14mins Aired 1946-12-19
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168. The Man Who Limped
     14mins Aired 1946-12-26
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169. The False Beard
     14mins Aired 1947-01-02
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170. Zeb
     14mins Aired 1947-01-09
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171. The Black Dog
     14mins Aired 1947-01-16
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172. A Question of Ethics
     14mins Aired 1947-01-23
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173. The Gold Fang
     14mins Aired 1947-01-30
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174. Pet Bear
     14mins Aired 1947-02-04
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175. The Substitution
     16mins Aired 1947-02-11
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176. The Red Parka
     14mins Aired 1947-02-20
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177. The Hermit of Nugget Hill
     15mins Aired 1947-02-27
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178. The Coffin
     13mins Aired 1947-03-06
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179. Sunshine Stones
     14mins Aired 1947-03-12
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180. The Birthday Present
     14mins Aired 1947-03-19
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181. The Big Stone House
     14mins Aired 1947-03-26
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182. The Dancing Bear
     14mins Aired 1947-04-02
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183. The Story of Big John
     14mins Aired 1947-04-09
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184. The Torn Sleeve
     14mins Aired 1947-04-16
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185. The Mad Trapper
     14mins Aired 1947-04-23
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186. The Red Setter
     14mins Aired 1947-04-30
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187. The Usurpers
     14mins Aired 1947-05-14
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188. Lost Mitten
     14mins Aired 1947-05-28
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189. The Wolf Cub
     29mins Aired 1947-06-12
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190. Grizzly
     29mins Aired 1947-06-19
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191. Pet Bear
     27mins Aired 1947-06-26
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192. The Puppy
     28mins Aired 1947-07-03
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193. Sam's Gold
     29mins Aired 1947-07-12
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194. The Man in the Fur Cap
     29mins Aired 1947-07-19
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195. A Dog Named Mabel
     28mins Aired 1947-07-26
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196. Messenger of Mercy
     29mins Aired 1947-08-02
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197. Derelict Dog
     28mins Aired 1947-08-09
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198. The Revenge of Steve Carlton
     29mins Aired 1947-08-23
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199. Clue to a Killer
     29mins Aired 1947-08-30
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200. The Stolen Pups
     28mins Aired 1947-09-06
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201. The Northern Pursuit
     28mins Aired 1947-09-11
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202. The Fraud
     29mins Aired 1947-09-18
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203. Reprisal
     29mins Aired 1947-09-25
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204. The Proof
     29mins Aired 1947-10-02
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205. The Malamute Pup
     29mins Aired 1947-10-09
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206. The Last Cabin
     30mins Aired 1947-10-16
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207. Rex
     29mins Aired 1947-10-23
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208. Sam's Wife
     29mins Aired 1947-11-01
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209. King's Escape
     30mins Aired 1947-11-08
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210. The Limping Dog
     27mins Aired 1947-11-15
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211. King Gets His Man
     29mins Aired 1947-11-22
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212. Tara
     30mins Aired 1947-11-29
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213. The Marked Cards
     28mins Aired 1947-12-06
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214. White Man's Law
     29mins Aired 1947-12-13
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215. The Shepherd Dog
     29mins Aired 1947-12-27
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216. The Silent One
     29mins Aired 1948-01-03
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217. Tago, the Half Breed
     29mins Aired 1948-01-10
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218. The Bridge
     30mins Aired 1948-01-17
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219. The Loyalty of Chief
     30mins Aired 1948-01-24
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220. The Pamphlet
     30mins Aired 1948-01-31
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221. The Red Herring
     30mins Aired 1948-02-07
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222. The Klondike Palace
     30mins Aired 1948-02-14
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223. Aunt Em
     30mins Aired 1948-02-21
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224. Silvertip
     30mins Aired 1948-02-28
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225. The Debt
     30mins Aired 1948-03-06
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226. Witness for the Crown
     30mins Aired 1948-03-13
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227. King Comes Home
     30mins Aired 1948-03-20
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228. The Wire Haired Terrier
     30mins Aired 1948-03-27
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229. Rusty
     30mins Aired 1948-04-24
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230. Breakup
     29mins Aired 1948-06-26
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231. Shots in the Dark
     29mins Aired 1948-09-06
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232. Winner by Proxy
     29mins Aired 1948-09-08
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233. Trader Muldoon
     29mins Aired 1948-09-15
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234. The Showdown
     26mins Aired 1948-09-17
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235. Lost Indian Mine
     26mins Aired 1948-09-20
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236. Icebound
     26mins Aired 1948-09-22
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237. Old Ben's Gold
     29mins Aired 1948-09-24
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238. Pot Luck Killers
     25mins Aired 1948-09-27
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239. Ghost Town
     30mins Aired 1948-09-29
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240. Find the Body
     30mins Aired 1948-10-01
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241. The Extra Uniform
     29mins Aired 1948-10-04
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242. Record Run
     29mins Aired 1948-10-06
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243. Parson Shorty Meadows
     29mins Aired 1948-10-08
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244. The Red Ace
     29mins Aired 1948-10-11
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245. Mine of Good Hope
     29mins Aired 1948-10-13
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246. White Hawk
     29mins Aired 1948-10-15
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247. Underground Ambush
     29mins Aired 1948-10-18
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248. The False Trail
     29mins Aired 1948-10-20
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249. The Poisoner of Chiliwaw
     29mins Aired 1948-10-22
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250. Samaritan of the Trail
     30mins Aired 1948-10-25
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251. Preston Turns the Tables
     30mins Aired 1948-10-27
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252. The Phantom Gang
     30mins Aired 1948-10-29
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253. The Call of Duty
     29mins Aired 1948-11-01
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254. The Man with the Red Hair
     30mins Aired 1948-11-03
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255. Death on the Trail
     30mins Aired 1948-11-05
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256. The Wilderness Uprising
     30mins Aired 1948-11-08
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257. Ben Yancy's Legacy
     30mins Aired 1948-11-10
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258. Shadow
     30mins Aired 1948-11-12
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259. The Second Chance
     30mins Aired 1948-11-15
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260. Manhunt
     30mins Aired 1948-11-17
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261. The St Bernard Dog
     30mins Aired 1948-11-19
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262. Mutiny on the Penguin
     29mins Aired 1948-11-22
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263. Old Moby's Cairn
     24mins Aired 1948-11-24
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264. Lost River Roundup
     29mins Aired 1948-11-26
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265. Strike at Pelican Creek
     29mins Aired 1948-11-29
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266. The Black Husky
     29mins Aired 1948-12-01
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267. The Sergeant's Right
     22mins Aired 1948-12-03
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268. Timber
     29mins Aired 1948-12-06
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269. The Dawson Fire
     29mins Aired 1948-12-08
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270. The Trap in Cabin Four
     30mins Aired 1948-12-10
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271. Escape to the North
     29mins Aired 1948-12-13
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272. Marlow's Gang
     24mins Aired 1948-12-15
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273. Faith in a Mountie
     26mins Aired 1948-12-17
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274. The Emerald in the Nugget
     24mins Aired 1948-12-20
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275. The Man with the Red Coat
     29mins Aired 1948-12-22
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276. Injun Devil
     29mins Aired 1948-12-27
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277. Arrowhead Frame-Up
     29mins Aired 1948-12-29
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278. Case of Frank Weaver
     29mins Aired 1948-12-31
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279. King Takes Over
     30mins Aired 1949-01-03
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280. Bonanza 47
     14mins Aired 1949-01-05
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281. Jim Belden's Secret
     14mins Aired 1949-01-07
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282. King Proves His Worth
     29mins Aired 1949-01-10
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283. Lem Baileys Pet Bear
     29mins Aired 1949-01-14
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284. White Water
     29mins Aired 1949-01-17
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285. Jimmy's Birthday Cake
     29mins Aired 1949-01-19
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286. Skagway Patrol
     29mins Aired 1949-01-21
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287. Mystery in the Cave
     29mins Aired 1949-01-24
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288. The Moose River Murder
     29mins Aired 1949-01-26
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289. Lost River Ambush
     29mins Aired 1949-01-28
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290. The Mongrel
     29mins Aired 1949-01-31
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291. On One Condition
     29mins Aired 1949-02-02
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292. The Trail of Grizzly Grayson
     30mins Aired 1949-02-04
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293. Rogue's Progress
     29mins Aired 1949-02-07
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294. Sergeant Preston Faces Death
     30mins Aired 1949-02-09
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295. Ambush
     29mins Aired 1949-02-11
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296. The Coward
     29mins Aired 1949-02-14
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297. Double Cross Creek
     30mins Aired 1949-02-16
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298. The Dog with the Gold Tooth
     30mins Aired 1949-02-18
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299. The Magic Light
     30mins Aired 1949-02-21
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300. Signal in Green
     29mins Aired 1949-02-23
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301. Danger Signal
     29mins Aired 1949-02-25
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302. River Pirates
     29mins Aired 1949-02-28
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303. Ambush at Forty Mile
     29mins Aired 1949-03-02
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304. The Music Hall Murder
     29mins Aired 1949-03-04
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305. Trail Mates
     30mins Aired 1949-03-07
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306. Bulldog Charm
     29mins Aired 1949-03-09
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307. The Meal that Convicted
     29mins Aired 1949-03-11
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308. The White Huskie
     30mins Aired 1949-03-14
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309. The Klondike Queen
     20mins Aired 1949-03-16
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310. The Caribou Case
     30mins Aired 1949-03-18
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311. The Black and White Pup
     29mins Aired 1949-03-21
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312. The Devil Dog
     30mins Aired 1949-03-23
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313. Letters to a Killer
     25mins Aired 1949-03-25
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314. Conover's Crime
     29mins Aired 1949-03-28
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315. Crumpled Handbill
     30mins Aired 1949-03-30
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316. The Killer
     30mins Aired 1949-04-01
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317. The Remittance Man
     30mins Aired 1949-04-04
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318. Dead Man's Map
     30mins Aired 1949-04-06
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319. The Knife Throwers
     30mins Aired 1949-04-08
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320. The Lucky Shirt
     30mins Aired 1949-04-11
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321. The Trail of the Werewolf
     30mins Aired 1949-04-13
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322. Trouble at Forty-Mile
     29mins Aired 1949-04-15
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323. The Luck of the Newtons
     29mins Aired 1949-04-18
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324. The Empty Coffin
     29mins Aired 1949-04-20
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325. The Doomed Witness
     29mins Aired 1949-04-22
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326. The Bear Trap
     30mins Aired 1949-04-25
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327. The Perfect Crime
     29mins Aired 1949-04-27
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328. Fire in the Sky
     30mins Aired 1949-04-29
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329. Escape to the North
     29mins Aired 1949-05-02
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330. The Sparrow
     29mins Aired 1949-05-04
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331. The Case of the Hard-Hearted Hermit
     29mins Aired 1949-05-06
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332. Race to Twenty Mile
     29mins Aired 1949-05-09
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333. The Million Dollar Deadline
     29mins Aired 1949-05-11
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334. The Skagway-Mail
     29mins Aired 1949-05-13
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335. The Counter Plan
     29mins Aired 1949-05-16
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336. The Bad Penny
     30mins Aired 1949-05-18
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337. Adventure in Selkirk
     30mins Aired 1949-05-20
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338. The Duel
     29mins Aired 1949-05-23
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339. Death and the Lucky Seven
     30mins Aired 1949-05-25
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340. The Skull in the Stone
     29mins Aired 1949-05-27
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341. The Case of the Turncoat Mountie
     29mins Aired 1949-05-30
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342. The Case of the Frightened Child
     30mins Aired 1949-06-01
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343. The Case of the Canyon Holdup
     30mins Aired 1949-06-03
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344. The Missing Code
     29mins Aired 1949-06-06
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345. The Case of the Yellow Ribbon
     29mins Aired 1949-06-08
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346. A Boy and His Dog
     30mins Aired 1949-06-10
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347. The Uphill Sled
     30mins Aired 1949-06-15
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348. King Takes Over
     30mins Aired 1949-06-22
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349. The Case of the Beautiful Swindler
     30mins Aired 1949-06-29
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350. The Case of the Crown Fire
     29mins Aired 1949-07-06
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351. Trickery in the River
     31mins Aired 1949-07-13
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352. The Case of the Kind Hearted Killer
     30mins Aired 1949-07-20
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353. The Case of the Unwilling Guardian
     30mins Aired 1949-07-27
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354. The Renegade Huskie
     29mins Aired 1949-08-03
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355. What Price King
     29mins Aired 1949-08-10
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356. The Case of the Friendly Enemies
     29mins Aired 1949-08-17
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357. The Yellow Kitten
     30mins Aired 1949-08-24
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358. The Minister's Missing Money
     30mins Aired 1949-08-31
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359. The Case of the Detective Who Liked Excitement
     30mins Aired 1949-09-07
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360. The Fan-Tan Gold Robbery
     29mins Aired 1949-09-12
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361. The Boy Who Feared Dogs
     30mins Aired 1949-09-14
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362. The Case of the Wishbone
     30mins Aired 1949-09-16
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363. Fire on the Trail
     30mins Aired 1949-09-19
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364. King and the Baxter Gang
     29mins Aired 1949-09-21
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365. The Case of the River Pirates
     30mins Aired 1949-09-23
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366. The Case of the Sourdough's Dog
     30mins Aired 1949-09-28
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367. The Phantom Witness
     30mins Aired 1949-09-30
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368. The Scent of Blood
     30mins Aired 1949-10-03
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369. Murder on the Mountain
     30mins Aired 1949-10-05
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370. The Generous Hobo
     30mins Aired 1949-10-07
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371. Allen's McRae's Birthday Present
     29mins Aired 1949-10-10
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372. The Burning Cabin
     29mins Aired 1949-10-12
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373. The Great Charlotta
     30mins Aired 1949-10-14
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374. The Doctor Disappears
     30mins Aired 1949-10-17
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375. Hazel Crest Decision
     29mins Aired 1949-10-19
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376. Rescue in the Forest
     30mins Aired 1949-10-21
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377. The Missing Money
     30mins Aired 1949-10-24
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378. Bad Boy
     30mins Aired 1949-10-26
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379. Ambush Near Selkirk
     30mins Aired 1949-09-26
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380. Nipper Moves Himself
     30mins Aired 1949-10-31
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381. Bear Trap
     29mins Aired 1949-11-02
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382. Dr Blake's Surrender
     30mins Aired 1949-11-04
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383. The Last Will
     29mins Aired 1949-10-28
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384. The Miser and the Mob
     30mins Aired 1949-11-09
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385. The Old Timer
     30mins Aired 1949-11-11
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386. The Senator Finds a Treasure
     30mins Aired 1949-11-14
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387. Note of Evidence
     29mins Aired 1949-11-16
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388. The Brothers' Promise
     30mins Aired 1949-11-18
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389. The King Emperor
     29mins Aired 1949-11-21
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390. The Stolen Box
     30mins Aired 1949-11-23
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391. The Barbary Gang
     30mins Aired 1949-11-25
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392. Grubstake for Vickers
     30mins Aired 1949-11-28
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393. 48 Hours to Pay
     29mins Aired 1949-11-30
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394. Outlaw's Twin
     30mins Aired 1949-12-02
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395. Dance at Caribou Creek
     29mins Aired 1949-12-05
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396. The Return of Tom Becket
     29mins Aired 1949-12-07
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397. Swindler's Luck
     29mins Aired 1949-12-09
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398. Copper Gulch Patrol
     29mins Aired 1949-12-12
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399. The Wainwright Cache
     29mins Aired 1949-12-14
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400. The Black Bag
     30mins Aired 1949-12-16
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401. Missing Gold
     29mins Aired 1949-12-19
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402. The Shanghaied Sergeant
     30mins Aired 1949-12-21
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403. The Sergeant's Present
     29mins Aired 1949-12-23
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404. Journey for Revenge
     29mins Aired 1949-12-26
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405. Swindler's Luck
     29mins Aired 1949-12-28
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406. The Prodigal Father
     30mins Aired 1949-12-30
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407. Rainbow's End
     29mins Aired 1950-01-02
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408. Jeff Marco's Gang
     29mins Aired 1950-01-04
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409. The Battle at Bradley's
     30mins Aired 1950-01-06
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410. Barry Jeffer's Trust
     30mins Aired 1950-01-09
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411. Red Devil
     30mins Aired 1950-01-11
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412. The Miners' Meeting
     30mins Aired 1950-01-13
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413. The Diamond Collar
     29mins Aired 1950-01-16
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414. The Long Trail
     30mins Aired 1950-01-18
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415. No Epitaph for Tombstone
     30mins Aired 1950-01-20
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416. The Ten Thousand Dollar Rewards
     30mins Aired 1950-01-23
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417. The Trap That Failed
     30mins Aired 1950-01-25
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418. The Ghost Raider
     30mins Aired 1950-01-27
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419. Casper Mott's Adventure
     29mins Aired 1950-01-30
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420. Circumstantial Evidence
     29mins Aired 1950-02-01
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421. Blind Man's Buff
     29mins Aired 1950-02-03
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422. Jailbreak
     29mins Aired 1950-02-06
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423. The Runaway Heir
     29mins Aired 1950-02-08
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424. Flaming Valley
     29mins Aired 1950-02-10
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425. The Haunted Mine
     29mins Aired 1950-02-13
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426. The Black Cat
     30mins Aired 1950-02-15
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427. The Murdered Witness
     30mins Aired 1950-02-20
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428. Trail's End
     29mins Aired 1950-02-22
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429. Uncle Joe's Luck
     29mins Aired 1950-02-24
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430. Guardian for Jimmy
     29mins Aired 1950-02-27
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431. When Thief Catches Thief
     30mins Aired 1950-03-01
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432. The Innocent Criminal
     30mins Aired 1950-03-03
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433. Wolf Creek
     30mins Aired 1950-03-06
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434. Restitution
     30mins Aired 1950-03-08
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435. The Lost Lady
     30mins Aired 1950-03-10
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436. Hidden Evidence
     30mins Aired 1950-03-13
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437. Secret Orders
     30mins Aired 1950-03-15
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438. The Man Who Fled
     31mins Aired 1950-03-17
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439. The Cascade Case
     29mins Aired 1950-03-20
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440. The Fugitive Bride
     29mins Aired 1950-03-22
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441. The Wolf Cub
     28mins Aired 1950-03-24
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442. Canyon Cache
     30mins Aired 1950-03-27
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443. Mystery of the Ridge
     29mins Aired 1950-03-29
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444. Twenty Little Indians
     29mins Aired 1950-03-31
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445. Unfinished Note
     29mins Aired 1950-04-03
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446. The Two Bullets
     29mins Aired 1950-04-05
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447. Wand Diamond
     29mins Aired 1950-05-26
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448. Notorious Chet Craig
     29mins Aired 1950-05-29
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449. The Dead Man's Trail
     28mins Aired 1950-05-31
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450. The Angel of Death
     30mins Aired 1950-06-02
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451. Six Gun Clue
     28mins Aired 1950-06-05
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452. Jose's Return
     29mins Aired 1950-06-07
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453. Revenge from Beyond
     29mins Aired 1950-06-09
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454. The Bag of Gold
     30mins Aired 1950-06-28
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455. Race of the River Boats
     30mins Aired 1950-07-07
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456. The Diamond Solitaire
     30mins Aired 1950-07-10
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457. Stolen Gold
     28mins Aired 1950-07-19
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458. The Spread Eagle Raid
     29mins Aired 1950-07-26
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459. The Beaverton Legacy
     29mins Aired 1950-08-02
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460. A Change of Mind
     29mins Aired 1950-08-09
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461. Ten Thousand Counterfeit
     33mins Aired 1950-08-16
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462. The Branded Pelts
     29mins Aired 1950-08-23
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463. Logan's Luck
     29mins Aired 1950-08-30
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464. Cal Dorset's Heir
     29mins Aired 1950-09-06
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465. The Gold Behind the Waterfall
     31mins Aired 1950-09-11
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466. The Polar Quest
     24mins Aired 1950-09-13
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467. Left to Die
     31mins Aired 1950-09-15
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468. The Sack of Sand
     32mins Aired 1950-09-18
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469. The Malemute Express
     22mins Aired 1950-09-20
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470. The Torn Map
     30mins Aired 1950-09-22
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471. Diagram of Danger
     29mins Aired 1950-09-25
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472. The Red Raiders
     29mins Aired 1950-09-27
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473. Dog Crazy
     29mins Aired 1950-09-29
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474. The Malacca Cane
     29mins Aired 1950-10-02
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475. The Vagabond
     29mins Aired 1950-10-04
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476. The Criminal Collie
     29mins Aired 1950-10-06
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477. The Blue Paper
     29mins Aired 1950-10-09
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478. Harper's Castle
     29mins Aired 1950-10-11
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479. A Dog Called Sparky
     29mins Aired 1950-10-13
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480. Fugitive from Bald Rock
     29mins Aired 1950-10-16
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481. The Masked Gunman
     29mins Aired 1950-10-18
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482. Out of the Night
     30mins Aired 1950-10-20
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483. Heart of a Killer
     30mins Aired 1950-10-23
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484. Dead Man's Whistle
     30mins Aired 1950-10-25
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485. A Call to Action
     28mins Aired 1950-10-27
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486. Undercover
     28mins Aired 1950-10-30
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487. Contention
     30mins Aired 1950-11-01
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488. Whistling in the Dark
     30mins Aired 1950-11-03
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489. Friend in Need
     30mins Aired 1950-11-06
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490. The Ghost Riders
     29mins Aired 1950-11-08
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491. The Clue of the Silver Pup
     29mins Aired 1950-11-13
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492. Passport to Death
     29mins Aired 1950-11-15
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493. The Telltale Knife
     30mins Aired 1950-11-17
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494. The Wrong Map
     29mins Aired 1950-11-20
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495. The Rebel Yell
     29mins Aired 1950-11-22
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496. Death Waits on the River
     29mins Aired 1950-11-24
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497. The Man in the Canyon
     28mins Aired 1950-11-27
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498. Gold Fever
     28mins Aired 1950-11-29
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499. Spider Burke's Daughter
     30mins Aired 1950-12-01
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500. Wild Dog
     29mins Aired 1950-12-04
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501. The Indian Sign
     29mins Aired 1950-12-06
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502. The Notorious Hawk Cooper
     30mins Aired 1950-12-08
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503. Danger at Devil's Gorge
     30mins Aired 1951-01-20
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504. Murder on Fox Run
     29mins Aired 1951-01-27
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505. Escape by Night
     29mins Aired 1951-01-28
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506. White Fox for Marie
     29mins Aired 1951-02-03
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507. Storm the Pass
     29mins Aired 1951-02-04
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508. The King of Keeno Creek
     28mins Aired 1951-02-10
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509. The Trail Robbers
     28mins Aired 1951-02-11
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510. Wrong Trail
     29mins Aired 1951-02-17
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511. Honest Young Man
     29mins Aired 1951-02-18
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512. Blackmailer's Payoff
     29mins Aired 1951-02-24
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513. Vanished Loot
     29mins Aired 1951-02-25
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514. Job for Jim Lackey
     30mins Aired 1951-03-03
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515. The Russian Rubies
     29mins Aired 1951-03-04
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516. Secret of the Closed Room
     29mins Aired 1951-03-10
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517. Doctor Redcoat
     29mins Aired 1951-03-11
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518. The Third Strike
     29mins Aired 1951-03-17
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519. Never Be Missed
     29mins Aired 1951-03-18
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520. The Counterfeit Heiress
     29mins Aired 1951-03-24
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521. Old Faithful
     29mins Aired 1951-03-25
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522. Cabin 102
     29mins Aired 1951-03-31
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523. The Blue Scarf
     29mins Aired 1951-04-01
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524. Trapper's Trail
     26mins Aired 1951-04-07
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525. Take It Easy
     30mins Aired 1951-04-08
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526. The Blind Husky
     25mins Aired 1951-04-14
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527. Team-Mates
     29mins Aired 1951-04-15
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528. Rowdy's Choice
     28mins Aired 1951-04-21
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529. Indian Dream
     29mins Aired 1951-04-22
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530. Number One Challenger
     29mins Aired 1951-06-10
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531. The Stuffed Shirt
     29mins Aired 1951-07-01
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532. Murder at the Flood
     29mins Aired 1951-07-08
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533. A Boy Called Jack
     29mins Aired 1951-07-12
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534. Thieves' Congress
     29mins Aired 1951-07-15
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535. Tom Barry's Return
     29mins Aired 1951-07-19
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536. The Trail's End
     29mins Aired 1951-07-22
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537. The Innocent Fugitives
     30mins Aired 1951-07-26
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538. And Far Away
     29mins Aired 1951-08-02
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539. The Widow's Son
     29mins Aired 1951-08-05
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540. The Man Who Feared Dogs
     29mins Aired 1951-08-09
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541. Ambush in Bellary Flats
     29mins Aired 1951-08-12
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542. Against Time
     28mins Aired 1951-08-16
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543. The Red Parka
     29mins Aired 1951-08-19
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544. The Scent of Death
     28mins Aired 1951-08-23
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545. Bullets for Preston
     29mins Aired 1951-08-26
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546. Red Coated Crook
     25mins Aired 1951-08-30
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547. Boy Alone
     29mins Aired 1951-09-02
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548. Junior Partner
     29mins Aired 1951-09-06
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549. Dividend on Murder
     29mins Aired 1951-09-09
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550. The Landlady
     22mins Aired 1951-09-13
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551. The Killer Cree
     28mins Aired 1951-09-16
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552. Chance Meeting
     29mins Aired 1951-09-20
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553. Trapper's Gold
     28mins Aired 1951-09-23
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554. Uncle Ben
     28mins Aired 1951-09-27
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555. Open and Shut
     28mins Aired 1951-10-04
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556. Fire in the Forest
     28mins Aired 1951-10-07
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557. Man in Hiding
     28mins Aired 1951-10-09
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558. Double Identity
     28mins Aired 1951-10-11
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559. The Mutiny's Survivor
     29mins Aired 1951-10-21
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560. Claim 22
     22mins Aired 1951-10-25
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561. Reward for Shiloh
     29mins Aired 1951-10-30
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562. Trail to Trouble
     29mins Aired 1951-11-01
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563. The Diamond Solitaire
     29mins Aired 1951-11-04
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564. Forbidden Ground
     29mins Aired 1951-11-06
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565. Si Adkin's Gold
     28mins Aired 1951-11-08
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566. The Forgetful Killer
     29mins Aired 1951-11-11
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567. Sneak Gun
     28mins Aired 1951-11-13
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568. The Trail of Gold
     30mins Aired 1951-12-09
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569. Neil Holton's Vow
     30mins Aired 1951-12-11
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570. Rainbow Gold
     30mins Aired 1951-12-13
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571. King Proves His Worth
     30mins Aired 1951-12-16
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572. Sins of the Father
     30mins Aired 1951-12-18
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573. White Water
     30mins Aired 1951-12-20
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574. McAllister's Bonanza
     30mins Aired 1951-12-23
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575. The Christmas Mite
     30mins Aired 1951-12-25
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576. Arms and the Girl
     30mins Aired 1951-12-27
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577. The Little Mountie
     30mins Aired 1951-12-30
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578. The Return of Red Gruver
     30mins Aired 1952-01-01
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579. Mystery Boy
     30mins Aired 1952-01-03
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580. Treacherous Journey
     30mins Aired 1952-01-08
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581. White Doctor
     30mins Aired 1952-01-10
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582. Man on the Trail
     30mins Aired 1952-01-15
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583. Ex-Partner
     30mins Aired 1952-01-17
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584. The Streets Are Guarded
     30mins Aired 1952-01-22
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585. Downriver Adventure
     30mins Aired 1952-01-24
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586. One Man's Meat
     30mins Aired 1952-01-29
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587. Ordeal at Fort Promise
     30mins Aired 1952-01-31
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588. The Hidden Cabin
     30mins Aired 1952-02-05
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589. Dead Man's Gold
     30mins Aired 1952-02-07
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590. Bread upon the Waters
     30mins Aired 1952-02-12
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591. The Case That Was Not Closed
     30mins Aired 1952-02-14
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592. Brotherhood of Man
     30mins Aired 1952-02-19
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593. Killers Live to Die
     30mins Aired 1952-02-21
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594. The Missing Heir
     30mins Aired 1952-02-26
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595. Laurie and the New Recruits
     30mins Aired 1952-02-28
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596. Thunderbird
     30mins Aired 1952-03-04
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597. The Land Otter's Totem
     30mins Aired 1952-03-06
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598. The Burial Totem Case
     29mins Aired 1952-03-11
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599. The Killer Whale
     30mins Aired 1952-03-13
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600. The Sun and Raven
     30mins Aired 1952-03-18
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601. The Prisoner
     30mins Aired 1952-03-20
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602. The Boy from Seattle
     30mins Aired 1952-03-25
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603. The Death Card
     30mins Aired 1952-03-27
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604. Hard Luck
     30mins Aired 1952-04-01
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605. The Ice Trail
     30mins Aired 1952-04-03
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606. Arctic Odyssey
     30mins Aired 1952-04-08
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607. Out of the Past
     30mins Aired 1952-04-10
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608. Stand-In for Cheeka
     30mins Aired 1952-04-15
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609. The Two Shots
     30mins Aired 1952-04-17
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610. The Haunting Fear
     30mins Aired 1952-04-22
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611. Brave Death
     30mins Aired 1952-04-24
     Play Episode Queue Episode
612. The Fugitive
     30mins Aired 1952-04-29
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613. Partners in Crime
     30mins Aired 1952-05-01
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614. Gold Legacy
     30mins Aired 1952-05-06
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615. Strange Treasure
     30mins Aired 1952-05-08
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616. The Pack-Rat Nest
     30mins Aired 1952-05-13
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617. The Young Camper
     30mins Aired 1952-05-15
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618. Guard of Honor
     30mins Aired 1952-05-22
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619. Mistaken Identity
     30mins Aired 1952-05-27
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620. The Shelf-Ridge Incident
     30mins Aired 1952-05-29
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621. Caw River Camp
     30mins Aired 1952-06-03
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622. Death by Proxy
     30mins Aired 1952-06-05
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623. Man from Missouri
     30mins Aired 1952-06-10
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624. Murder on the Mountain
     30mins Aired 1952-09-07
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625. The Queen's Parlor
     29mins Aired 1953-02-19
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626. SOS from Panamint
     29mins Aired 1953-03-05
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627. The Death Dart
     29mins Aired 1953-10-29
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628. The Rag Doll
     29mins Aired 1953-11-03
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629. Outlaw in Uniform
     28mins Aired 1955-01-06
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Challenge of the Yukon was a radio series based on Detroit's station WXYZ that explored the adventures of Sergeant William Preston of the Northwest Mounted Police and his lead sled dog, Yukon King, as they fought wrongdoers in the Northern wilderness during the Gold Rush of the 1890s. The program adopted an adventure format, focusing on the heroics of a working dog and the characters' efforts to help injured trappers, smuggle trackers and protect cabin dwellers from wolverines. Yukon King was a critical character in the show, helping to drive the premise and action of the storyline.

The radio show began as a 15-minute serial, airing locally from 1938 until May 28, 1947. After acquiring Quaker Oats as a sponsor, the series expanded to a half-hour format and moved to network programming. Challenge of the Yukon aired on ABC from June 12, 1947 to December 30, 1949 and later on The Mutual Broadcasting System from January 2, 1950 until its last episode on June 9, 1955. The title changed from Challenge of the Yukon to Sergeant Preston of the Yukon in November 1951, and that name remained until the end of the series and transitioned into television.

Performers: Richard Simmons, Brace Beemer, Paul Sutton

Sources: archive.org, wikipedia.org, otrcat.com