| A Bronze Age burial in a tumulus at Annaghkeen, Headford, Co. Galway | Costello, T. B. | Article in Journal | | 1922 |
| Lines of defence in Ulster, 1803 | | Article in Journal | | 1954 |
| Some old Galway domestic utensils | Costello, T. B. | Article in Journal | | 1905 |
| The ancient law school of Park, Co. Galway | Costello, T. B. | Article in Journal | | 1940 |
| The Hound’s Grave at Leganncorkee in the Parish of Ballynacourtee. Note on | Costello, T. B. | Article in Journal | | 1911 |
| Trade tokens of the County of Galway in the seventeenth century : with introductory note | Costello, T. B. | Article in Journal | | 1911 |
| Tuam raths and souterrains | Costello, T. B. | Article in Journal | | 1902 |
| Tuam raths and souterrains | Costello, T. B. | Article in Journal | | 1903 |