| Buckley the brickaloch | O'Leary, D. | Article in Journal | | 1946 |
| Maynooth to Edenderry railway | Cullen, S.O'Leary, D. | Article in Journal | | 1995 |
| Memorias del General Daniel Florencio O'Leary : narración | McNerney, Robert F.O'Leary, D. | Monograph or Collective Volume | University of Texas Press | 1970 |
| Memorias del general Daniel Florencio O'Leary. Narración | O'Leary, D. | Monograph or Collective Volume | Imprenta Nacional | 1952 |
| Ships arrived in the harbour of Corke, the eleventh and twelfth of July, 1703 | O'Leary, D. | Article in Journal | | 1947 |
| Some old Cork accounts | O'Leary, D. | Article in Journal | | 1947 |
| The last earl of Desmond | O'Leary, D. | Thesis | | 1953 |
| Two inventories from the Caulfield papers | O'Leary, D. | Article in Journal | | 1947 |