| 1. | V1 | #2 | Dec. 1926 | Under Three Flags | |
| 2. | V1 | #3 | Jan. 1927 | O’Leary Saves the Sector | |
| 3. | V1 | #4 | Feb. 1927 | O’Leary Proves His Courage | |
| 4. | V2 | #1 | Mar. 1927 | O’Leary on Liason | |
| 5. | V2 | #2 | Apr. 1927 | O’Leary Holds the Trench | |
| 6. | V2 | #3 | May 1927 | O’Leary Consults the Stars | |
| In Battle Stories (Fawcett) |
| 7. | V1 | #6 | Feb. 1928 | Hinky, Dinky, Parle Vous | |
| 8. | V2 | #7 | Mar. 1928 | Hinky, Dinky, Parle Vous | |
| 9. | V3 | #8 | Apr. 1928 | Hinky, Dinky, Parle Vous | |
| 10. | V4 | #9 | May 1928 | Hinky, Dinky, Parle Vous | |
| 11. | V5 | #10 | June 1928 | Hinky, Dinky, Parle Vous | |
| 12. | V6 | #11 | July 1928 | O’Leary Signs the Armistice | |
| 13. | V7 | #37 | Sep. 1930 | Terrence X. O’Leary of the Rainbow Division | |
| 14. | V7 | #38 | Oct. 1930 | Terrence X. O’Leary of the Rainbow Division | |
| 15. | V7 | #39 | Nov. 1930 | Terrence X. O’Leary of the Rainbow Division | |
| 16. | V7 | #40 | Dec. 1930 | Terrence X. O’Leary of the Rainbow Division | |
| In War Stories |
| 17. | V34 | #100 | Nov. 1931 | O’Leary Carries On | |
| 18. | V35 | #104 | Apr. 1932 | Terence X. O’Leary, Wagon Soldier | |
| 19. | V36 | #107 | June 1932 | O’Leary, Secret Service | |
| In Battle Stories |
| 20. | V9 | #53 | Jan. 1932 | Curse of the Iron Cross | |
| 21. | V10 | #55 | Apr. 1932 | O’Leary’s Rough Riders | |
| 22. | V10 | #56 | June 1932 | The Y.M.C.A. Goes Over the Top | |
| 23. | V10 | #57 | July 1932 | That Fightin’ Irish Son-of-a-Gun | |
| 24. | V11 | #62 | Dec. 1932 | Sgt. O’Leary’s Tank Busters | |
| In War Birds (Dell) |
| 25. | V22 | #64 | July 1933 | O’Leary, Sky Hawk | |
| 26. | V22 | #65 | Aug. 1933 | O’Leary Flies a Ghost | |
| 27. | V22 | #68 | Nov. 1933 | O’Leary, Falconeer | |
| 28. | V23 | #69 | Dec. 1933 | Suicide Wings | |
| 29. | V23 | #70 | Jan. 1934 | O’Leary Paints the Eagle | |
| 30. | V24 | #72 | Mar. 1934 | Ghost of the Black Wings | |
| 31. | V25 | #73 | Apr. 1934 | O’Leary Rides with Death | |
| 32. | V25 | #75 | June 1934 | O’Leary’s Last Supper | |
| 33. | V26 | #76 | July 1934 | O’Leary, Zeppelin Killer | |
| 34. | V26 | #78 | Sep. 1934 | O’Leary, the Devil’s Darling | |
| 35. | V27 | #79 | Oct. 1934 | O’Leary, the Devil’s Darling | |
| 36. | V28 | #80 | Nov. 1934 | O’Leary Cracks the Crimson Legion | |
| 37. | V29 | #81 | Dec. 1934 | O’Leary Cracks the Crimson Legion | |
| 38. | V29 | #82 | Jan. 1935 | O’Leary, the Devil’s Undertaker | |
| 39. | V29 | #83 | Feb. 1935 | O’Leary, Hell’s Thunderbolt | |
| Retitled Terence X. O’Leary’s War Birds |
| 40. | V30 | #84 | Mar. 1935 | O’Leary Fights the Golden Ray | |
| 41. | V30 | #85 | Apr. 1935 | O’Leary, Dyno-Blaster or Adventure of the Ageless Men | |
| 42. | V30 | #86 | June 1935 | The Purple Warriors of Neptunia | |
| Title reverts to War Birds |
| 43. | V31 | #87 | Oct. 1935 | The Sky Hawk Screams | |
| In Battle Stories (Fawcett) |
| 44. | V11 | #65 | Oct. 1935 | O’Leary Tames the Boche | |
| In War Stories (second series) (Dell) |
| 45. | V11 | #1 | Feb. 1936 | Soldiers of Death | |
| In Battle Stories (Fawcett) |
| 46. | V11 | #66 | Mar. 1936 | Terence X. O’Leary in Ethiopia | |
