The Three Mesquiteers in order

1. The Three Mesquiteers (1936), 2. Ghost Town Gold (1936), 3. Roarin' Lead (1936), 4. The Riders of the Whistling Skull (1937), 5. Hit the Saddle (1937), 6. Gunsmoke Ranch (1937), 7. Come on, Cowboys (1937), 8. Range Defenders (1937), 9. Heart of the Rockies (1937), 10. The Trigger Trio (1937), 11. Wild Horse Rodeo (1937), 12. The Purple Vigilantes (1938), 13. Call The Mesquiteers (1938), 14. Outlaws of Sonora (1938), 15. Riders of the Black Hills (1938), 16. Heroes of the Hills (1938), 17. Pals of the Saddle (1938), 18. Overland Stage Raiders (1938), 19. Santa Fe Stampede (1938), 20. Red River Range (1938), 21. The Night Riders (1939), 22. Three Texas Steers (1939), 23. Wyoming Outlaw (1939), 24. New Frontier (1939), 25. The Kansas Terrors (1939), 26. Cowboys from Texas (1939), 27. Pioneers of the West (1940), 28. Covered Wagon Days (1940), 29. Rocky Mountain Rangers (1940), 30. Oklahoma Renegades (1940), 31. Under Texas Skies (1940), 32. The Trail Blazers (1940), 33. Heroes of the Saddle (1940), 34. Lone Star Raiders (1940), 35. Prairie Pioneers (1941), 36. Pals of the Pecos (1941), 37. Saddlemates (1941), 38. Gangs of Sonora (1941), 39. Outlaws of Cherokee Trail (1941), 40. Gauchos of El Dorado (1941), 41. West of Cimarron (1941), 42. Code of the Outlaw (1942), 43. Raiders of the Range (1942), 44. Westward Ho (1942), 45. The Phantom Plainsmen (1942), 46. Shadows on the Sage (1942), 47. Valley of Hunted Men (1942), 48. Thundering Trails (1943), 49. The Blocked Trail (1943), 50. Santa Fe Scouts (1943), 51. Riders of the Rio Grande (1943).

About 48h 2m across 51 released films.

None are listed on TMDB.