The Hazards of Helen in order

1. Helen's Sacrifice (1914), 2. The Plot at the Railroad Cut (1914), 3. The Girl at the Throttle (1914), 4. The Stolen Engine (1914), 5. The Flying Freight's Captive (1914), 6. The Black Diamond Express (1914), 7. The Escape on the Limited (1914), 8. The Girl Telegrapher's Peril (1915), 9. The Leap from the Water Tower (1915), 10. The Broken Circuit (1915), 11. The Fast Mail's Danger (1915), 12. The Little Engineer (1915), 13. The Hazards of Helen: Episode13, The Escape on the Fast Freight (1915), 14. The Red Signal (1915), 15. The Engineer's Peril (1915), 16. The Open Drawbridge (1915), 17. The Death Train (1915), 18. The Night Operator at Buxton (1915), 19. The Railroad Raiders of '62 (1915), 20. The Girl at Lone Point (1915), 21. A Life in the Balance (1915), 22. The Girl on the Trestle (1915), 23. The Girl Engineer (1915), 24. A Race for a Crossing (1915), 25. The Box Car Trap (1915), 26. The Hazards of Helen Ep26: The Wild Engine (1915), 27. The Fiend at the Throttle (1915), 28. The Broken Train (1915), 29. A Railroader's Bravery (1915), 30. The Human Chain (1915), 31. The Pay Train (1915), 32. Near Eternity (1915), 33. In Danger's Path (1915), 34. The Midnight Limited (1915), 35. A Wild Ride (1915), 36. The Fate of Number One (1915), 37. A Deed of Daring (1915), 38. The Girl on the Engine (1915), 39. The Runaway Boxcar (1915), 40. The Substitute Fireman (1915), 41. The Limited's Peril (1915), 42. A Perilous Chance (1915), 43. Train Order Number Forty-Five (1915), 44. The Broken Rail (1915), 45. Nerves of Steel (1915), 46. A Girl's Grit (1915), 47. A Matter of Seconds (1915), 48. The Watertank Plot (1915), 49. A Test of Courage (1915), 50. A Mile a Minute (1915), 51. The Rescue of the Brakeman's Children (1915), 52. Danger Ahead! (1915), 53. The Girl and the Special (1915), 54. The Girl on the Bridge (1915), 55. The Dynamite Train (1915), 56. The Tramp Telegrapher (1915), 57. Crossed Wires (1915), 58. The Wrong Train Order (1915), 59. A Boy at the Throttle (1915), 60. At the Risk of Her Life (1916), 61. When Seconds Count (1916), 62. The Haunted Station (1916), 63. The Open Track (1916), 64. Tapped Wires (1916), 65. The Broken Wire (1916), 66. The Peril of the Rails (1916), 67. The Perilous Swing (1916), 68. The Switchman's Story (1916), 69. The Girl Telegrapher's Nerve (1916), 70. A Race for a Life (1916), 71. The Girl Who Dared (1916), 72. The Detective's Peril (1916), 73. The Trapping of 'Peeler' White (1916), 74. The Record Run (1916), 75. The Race for a Siding (1916), 76. The Governor's Special (1916), 77. The Trail of Danger (1916), 78. The Human Telegram (1916), 79. The Bridge of Danger (1916), 80. One Chance in a Hundred (1916), 81. The Capture of Red Stanley (1916), 82. The Spiked Switch (1916), 83. The Treasure Train (1916), 84. A Race Through the Air (1916), 85. In Death's Pathway (1916), 86. The Mysterious Cipher (1916), 87. The Engineer's Honor (1916), 88. To Save the Road (1916), 89. The Broken Brake (1916), 90. A Plunge from the Sky (1916), 91. A Mystery of the Rails (1916), 92. Hurled Through the Drawbridge (1916), 93. With the Aid of the Wrecker (1916), 94. At Danger's Call (1916), 95. The Secret of the Box Car (1916), 96. Ablaze on the Rails (1916), 97. The Hoodoo of Division B (1916), 98. Defying Death (1916), 99. The Death Swing (1916), 100. The Blocked Track (1916), 101. To Save the Special (1916), 102. A Daring Chance (1916), 103. The Lost Messenger (1916), 104. The Gate of Death (1916), 105. The Lone Point Mystery (1916), 106. The Runaway Sleeper (1916), 107. The Forgotten Train Order (1916), 108. The Trial Run (1916), 109. The Lineman's Peril (1916), 110. The Midnight Express (1916), 111. The Vanishing Box Car (1916), 112. A Race with Death (1916), 113. The Mogul Mountain Mystery (1917), 114. The Fireman's Nemesis (1917), 115. The Wrecked Station (1917), 116. The Railroad Claim Intrigue (1917), 117. The Death Siding (1917), 118. The Prima Donna's Special (1917), 119. The Sidetracked Sleeper (1917), 120. The Hazards of Helen (1917).

About 41h 15m across 120 released films.

None are listed on TMDB.