| A short history of the potato, the famine, late blight and Irish research on Phytophthora infestans | Dowley, L. J.O'Sullivan, C. | Monograph or Collective Volume | Teagasc | 1995 |
| Archbishop Hugh MacMahon | Flynn, L. J. | Article in Journal | | 1973 |
| Commemorating bonds of Union: remembering the Ulster Special Constabulary at the National Memorial Arboretum | Armstrong, L. J. | Article in Book | | 2017 |
| Commodore John Barry | Griffin, William L. J. | Article in Journal | | 1923 |
| Dublin burial grounds | Hughes, J. L. J. | Article in Journal | | 1965 |
| Dublin shorthand writers | Hughes, J. L. J. | Article in Journal | | 1953 |
| Dublin street names | Hughes, J. L. J. | Article in Journal | | 1956 |
| Elizabeth Patterson Bonaparte, from the Baer manuscript | Emerson, L. J. | Article in Journal | | 1993 |
| Hugh MacMahon, Bishop of Clogher 1707-15 and Archbishop of Armagh 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| Hugh McMahon, bishop of Clogher, 1707-15, and archbishop of Armagh, 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| John Mitchel | Walsh, L. J. | Monograph or Collective Volume | | 1934 |
| O'Grady of Cappercullen | Bardwick, L. J. | Article in Journal | | 1957 |
| Obituaries. Mary O'Shea | L. J. | Article in Journal | | 2022 |
| Phytophthora infestans 150 : European Association for Potato Research (EAPR) - Pathology section conference, held in Trinity College Dublin, September 1995 to mark the one hundred and fiftieth anniversary of the first record of potato blight in Ireland and subsequent years | | Monograph or Collective Volume | Boole Press in conjunction with Teagasc for the European Association for Potato Research | 1995 |
| Research on Phytophora infestans in Ireland : a short historical review | Dowley, L. J. | Article in Book | | 1995 |
| St Patrick's Purgatory, Lough Derg, county Donegal | Flynn, L. J. | Monograph or Collective Volume | Eason | 1986 |
| The battle of the Curlews | Emerson, L. J. | Article in Journal | | 1952 |
| The campaign of Red Hugh O'Donnell, 1 | Emerson, L. J. | Article in Journal | | 1960 |
| The chief secretaries in Ireland 1566-1921 | Hughes, J. L. J. | Article in Journal | | 1952 |
| The Dublin court of conscience | Hughes, J. L. J. | Article in Journal | | 1959 |
| The Dublin fishery company, 1818-30 | Hughes, J. L. J. | Article in Journal | | 1951 |
| The languages of belief : nineteenth-century religious discourse in southwest Donegal | Taylor, L. J. | Article in Book | | 1992 |
| The material for victory : the memoirs of Andrew J. Kettle | Kettle, Andrew J.Kettle, L. J. | Monograph or Collective Volume | Fallon | 1958 |
| The priest and the agent : social drama and class consciousness in the west of Ireland | Taylor, L. J. | Article in Journal | | 1985 |