| 'The Calamitous Burning'. The Dromcollogher disaster of 1926 | Irwin, Liam | Article in Journal | | 2013 |
| Appreciations. Chris O'Mahoney | Irwin, Liam | Article in Journal | | 2007 |
| Appreciations. Paddy Yeoman | Irwin, Liam | Article in Journal | | 2007 |
| Appreciations. Mainchín Seoighe | Irwin, Liam | Article in Journal | | 2007 |
| Appreciations. Morgan McCloskey | Irwin, Liam | Article in Journal | | 2007 |
| Begley's diocese of Limerick | Irwin, Liam | Article in Journal | | 1994 |
| Between the sieges 1690-1691 | Irwin, Liam | Article in Journal | | 1998 |
| Chris O'Mahony: an appreciation | Doolan, Herman, O.D.C.Irwin, LiamMadden, Nicholas, O.D.C. | Article in Journal | | 2007 |
| Chronicon Westroporum | Irwin, Liam | Article in Journal | | 2001 |
| Limerick : history and society : interdisciplinary essays on an Irish county | | Monograph or Collective Volume | Georgraphy Publications | 2009 |
| Miscellanea : a nineteenth century description of Kilpeacon church | Irwin, Liam | Article in Journal | | 2000 |
| Miscellanea : an unhappy experience in Cruise's Hotel | Irwin, Liam | Article in Journal | | 2000 |
| Miscellanea : Visit of the Marquis of Lansdowne to his Limerick estate | Irwin, Liam | Article in Journal | | 2003 |
| Personalities and politics : the presidency of Munster and the Lords Lieutenant 1660-72 | Irwin, Liam | Article in Book | | 2005 |
| Politics, religion and economy : Cork in the 17th century | Irwin, Liam | Article in Journal | | 1981 |
| Politics, religion, and economy : Cork in the seventeenth century | Irwin, Liam | Article in Journal | | 1980 |
| Purgatory re-visited : the historical context of Ó Bruadair | Irwin, Liam | Article in Book | | 2001 |
| Sarsfield : the man and the myth | Irwin, Liam | Article in Book | | 1995 |
| Seventeenth century Limerick | Irwin, Liam | Article in Book | | 1997 |
| Some excavations in Co. Clare | Irwin, Liam | Article in Journal | | 1977 |
| The 1st duke : an introduction to the Charles II charter | Irwin, Liam | Article in Journal | | 1977 |
| The earl of Orrery and the military problems of restoration Munster | Irwin, Liam | Article in Journal | | 1977 |
| The European dimension | Irwin, Liam | Article in Journal | | 1990 |
| The first duke : an introduction to the Charles II-charter | Irwin, Liam | Article in Journal | | 1977 |
| The Irish provincial presidencies 1569-1672 | Irwin, Liam | Article in Journal | | 1980 |
| The Limerick bishop who said no to papal infallibility | Irwin, Liam | Article in Journal | | 1993 |
| The log, the hour and the halfpenny : a case study of a 19th century Limerick industrial dispute | Irwin, Liam | Article in Book | | 2003 |
| The lord presidency of Munster, 1625-72 | Irwin, Liam | Thesis | | 1976 |
| The role of the presidency in the economic development of Munster, 1660-1672 | Irwin, Liam | Article in Journal | | 1977 |
| The suppression of the Irish presidency system | Irwin, Liam | Article in Journal | | 1980 |
| Thomas Johnson Westropp | Irwin, Liam | Article in Book | | 2009 |
| Thomas Johnson Westropp, 1860-1922 | Irwin, Liam | Article in Book | Four Courts | 2012 |