| "Der Mary this is fine cuntry is there is in the wourld" : Irish-English and Irish in late eighteenth- and nineteenth-century Australia | Troy, Jakelin | Article in Book | Poolbeg | 1991 |
| Agricultural prices and living costs in pre-famine Cork | O'Brien, John B. | Article in Journal | | 1977 |
| An outline of the history of the civil parishes of Bunratty and Drumline c.1200-1700 | O'Brien, John | Article in Journal | | 1999 |
| Australia and the Repeal of the [Irish] External Relations Act, 1948 | O'Brien, John B. | Article in Book | | 1986 |
| Australia, Britain, Ireland and the Ottawa Conference : the Empire at Work | O'Brien, John B. | Article in Book | | 1989 |
| Business history | O'Brien, John | Article in Journal | | 1972 |
| Clare : county of contrast | O'Brien, JohnSpellissy, Sean | Monograph or Collective Volume | The author | 1987 |
| Conditional Loyalties : Australia, Ireland, and the Decline of the Dominion Office | O'Brien, John B. | Monograph or Collective Volume | | 1990 |
| Cork society in the 1850s | O'Brien, John B. | Article in Journal | | 1996 |
| Discrimination in Northern Ireland, 1920-1939 : myth or reality | O'Brien, John | Monograph or Collective Volume | Cambridge Scholars Publishing | 2010 |
| Expressionism and the formative years : insights from the early diaries of Denis Johnston | O'Brien, John | Article in Journal | | 1989 |
| Gender in Irish writing | Cairns, D.O'Brien, Johnson T. | Monograph or Collective Volume | [s.n.] | 1991 |
| George G. Higgins and the quest for worker justice : the evolution of Catholic social thought in America | O'Brien, John J. | Monograph or Collective Volume | Rowman & Littlefield | 2005 |
| Glimpse of Portlaoise : a pictorial parade | | Monograph or Collective Volume | Leinster Express Newspapers | 1993 |
| Historic past preserved in a 21st century industrial setting | Garrihy, ColmanO'Brien, John | Article in Journal | | 2024 |
| Ireland's Departure from the British Commonwealth | O'Brien, John B. | Article in Journal | | 1988 |
| Ireland's departure from the British Commonwealth | O'Brien, John B. | Article in Journal | | 2002 |
| Merchants in Cork before the famine | O'Brien, John B. | Article in Book | | 1986 |
| Mountcashel tower house and its colourful inhabitants throughout history | O'Brien, John | Article in Journal | | 1978 |
| Population, politics and society in Cork, 1780-1900 | O'Brien, John B. | Article in Book | | 1993 |
| Population, Society and Politics in Cork from the Late-Eighteenth Century to 1900 | O'Brien, John B. | Article in Book | | 2002 |
| Sadleir's bank (the Tipperary joint stock bank 1838-56) | O'Brien, John B. | Article in Journal | | 1977 |
| Studies in Irish, British and Australian relations, 1916-1963: trade, diplomacy and politics | O'Brien, John B. | Monograph or Collective Volume | Four Courts Press | 2005 |
| The British government and Archbishop Daniel Mannix | O'Brien, John | Article in Journal | | 1988 |
| The Catholic middle classes in pre-Famine Cork | O'Brien, John B. | Monograph or Collective Volume | National University of Ireland | 1980 |
| The council books of the corporation of the city of Cork | O'Brien, John B. | Article in Journal | | 1987 |
| The Hacketts : glimpses of entrepreneurial life in Cork 1800-1870 | O'Brien, John B. | Article in Journal | | 1985 |
| The Irish emigrant experience in Australia | | Monograph or Collective Volume | Poolbeg | 1991 |
| The Irish in Australia, 1945-68 | O'Brien, John | Article in Book | | 1984 |
| The Irish revolutionary movement and W. M. Hughes : 1916-1922 | O'Brien, John B. | Article in Book | | 2000 |
| The land and people of nineteenth-century Cork | O'Brien, John B. | Article in Journal | | 1975 |
| The vanishing Irish | | Monograph or Collective Volume | [s.n.] | 1954 |
| Tower houses in south Clare | O'Brien, John | Article in Journal | | 1977 |
| Women and early Irish Lawn Tennis | O'Brien, John | Article in Journal | | 2024 |