| Charles Joseph Kickham and John O'Leary | Green, E. R. R. | Article in Book | | 1968 |
| Dublin Fenianism in the 1880s : 'The Irish Culture of the Future?' | Kelly, Matthew | Article in Journal | | 2000 |
| Focus on the Fenians : the 'Irish People' trials, November 1865 - January 1866 | Rynne, Frank | Article in Journal | | 2005 |
| John O'Leary's place in the Fenian movement | Bourke, Marcus | Article in Journal | | 1967 |
| John O'Leary; a study in Irish separatism | Bourke, Marcus | Monograph or Collective Volume | Anvil Books | 1967 |
| Rebels in the dock : the prosecution of the Dublin Fenians, 1865-6 | Kostal, R. W. (Rande W.) | Article in Journal | | 1999 |
| Recollections of Fenians and Fenianism | Bourke, MarcusO'Leary, John, 1830-1907 | Monograph or Collective Volume | Irish University Press | 1969 |
| W. B. Yeats, John O'Leary and the Contemporary Club | Macken, Mary M. | Article in Journal | | 1939 |
| Willie Yeats and John O'Leary | Crone, J. S. | Article in Journal | | 1940 |
| Yeats, O'Leary and 'Romantic Ireland' | McGee, Owen | Article in Journal | | 2007 |