| A notable convert | O'Connor, R. F. | Article in Journal | | 1914 |
| Agricultural output in the Irish Free State area before and after independence | Guiomard, C.O'Connor, R. | Article in Journal | | 1985 |
| Blessed Oliver Plunket | O'Connor, R. F. | Article in Journal | | 1924 |
| David Colbert Broderick | O'Connor, R. C. | Article in Journal | | 1914 |
| Folk music in Ireland | O'Connor, R. C. | Article in Journal | | 1918 |
| James Barry | O'Connor, R. F. | Article in Journal | | 1906 |
| Justin McCarthy | O'Connor, R. F. | Article in Journal | | 1912 |
| Justin McCarthy | O'Connor, R. F. | Article in Journal | | 1912 |
| The growing demand for Catholic education in the eighteenth century, leading to the establishment of St. Patrick's, Maynooth in 1795 | O'Connor, R. | Article in Journal | | 1981 |
| The Irish element in America | O'Connor, R. C. | Article in Journal | | 1910 |