| 'Lusitania' : unravelling the mysteries | O'Sullivan, Patrick | Monograph or Collective Volume | Collins | 1998 |
| 1814 : an Irish gunner on the Upper Mississippi | Greenhous, Brereton | Article in Journal | | 1972 |
| A catalogue of books in the Bristol Reference Library printed in England, Scotland and Ireland and of English books printed abroad, 1641-1700 | Bristol Public Libraries | Monograph or Collective Volume | | 1958 |
| A friend of the colonial powers? : Frank Aiken, Ireland's United Nations alignment and decolonisation | Bhreatnach, Aoife | Article in Book | | 2005 |
| A history of the English people in the 19th century | Halévy, Élie, 1870-1937 ; Barker, D. A. ; Watkin, E. I. | Monograph or Collective Volume | NA | 1949 |
| A lodge of Irishmen at Lisbon, 1738 | Vatcher, S. | Article in Journal | | 1971 |
| A nation in waiting? The Irish in France in the eighteenth century | Whelan, Kevin | Article in Book | | 2009 |
| A west country family : the Pophams from 1150 | Popham, F. W. | Monograph or Collective Volume | | 1976 |
| Acta Sacrae Congregationis de Propaganda Fide, 1622-50 | | Article in Journal | | 1959 |
| All strangers here : 100 years of personal writing from the Irish Foreign Service | | Monograph or Collective Volume | Department of Foreign Affairs | 2021 |
| American diplomats and Irish coercion, 1880-3 | Edwards, Owen Dudley | Article in Journal | | 1967 |
| An introduction to the coinage of Æthelred II | Dolley, Michael | Article in Book | | 1978 |
| An Irish Cuba? | Mulqueen, John | Article in Journal | | 2021 |
| An Irish gunner on the upper Mississippi, 1814 | Greenhous, Brereton | Article in Journal | | 1972 |
| An Irish Sister of Mercy in the Crimean War | Murphy, J. J. W. | Article in Journal | | 1962 |
| An Irish visitor to the court of the Shah of Persia in 1835 : extract from the unpublished diary of Sir Francis Hopkins of Athboy | | Article in Journal | | 1971 |
| An officer's [General Jean Sarrazin] account of the French campaign in Ireland in 1798 | Hayes, Richard Francis | Article in Journal | | 1955 |
| Andrew Campbell, bishop of Kilmore, 1753-1769 | Campbell, P. J. | Article in Journal | | 1977 |
| Andrew Campbell, bishop of Kilmore, 1753-1769 : student days in Spain | Walsh, Micheline | Article in Journal | | 1977 |
| Aodh Mac Aingil, Gael san Eoraip (1571-1626) | Ó Gallchóir, N. | Article in Journal | | 1975 |
| Apocryphal lore and insular tradition in St Gall, Stiftsbibliothek MS 908 | Wright, C. D. | Article in Book | | 1987 |
| Argentina and the Falklands (Malvinas) : the Irish connection | Keogh, Dermot | Article in Book | | 1992 |
| Armagh and Rome in the seventh century | Sharpe, Richard | Article in Book | | 1984 |
| Atlantic Islands | Quinn, D. B. (David Beers) | Article in Book | | 1989 |
| Bretons et Irlandais en France du Nord - VIe-VIIIe siècles | Merdrignac, Bernard | Article in Book | | 1991 |
| Britain and Ireland | Mansergh, Nicholas, 1910-1991 | Monograph or Collective Volume | NA | 1946 |
| Britain in the age of Walpole | | Monograph or Collective Volume | Macmillan | 1984 |
| Britain, Ireland and continental Europe in the eighteenth century : similarities, connections, identities | Conway, Stephen | Monograph or Collective Volume | Oxford University Press | 2011 |
| British history 1485-1763 : Britain in the widening world | Hopkins, Eric | Monograph or Collective Volume | | 1967 |
| British intelligence, the republican movement and the IRA's German links, 1935-45 | O'Halpin, Eunan | Article in Book | | 2003 |
| Britishness and otherness : an argument | Colley, Linda | Article in Journal | | 1992 |
| Calendar of "Irlande" vols 4, 5, 6 | Tierney, Mark | Article in Journal | | 1982 |
| Calendar of "Irlande" vols. 19, 22, and 26 in the collection "Europe", 1930-40, in the Archives Diplomatiques, Paris | Tierney, Mark | Article in Journal | | 1984 |
| Calendar of "Irlande", vols 9, 10 and 11, in the collection "Europe, 1918-29", in the Archives Diplomatiques, Paris | Tierney, Mark | Article in Journal | | 1983 |
| Calendar of 'Irlande' vols. 1, 2 and 3 in the collection 'Europe' 1918-29, in the Archives Diplomatiques, Paris | Tierney, Mark | Article in Journal | | 1979 |
| Calendar of letters and state papers relating to English affairs, 1558-1603 | Anonymous | Monograph or Collective Volume | [s.n.] | 1892 |
| Calendar of letters, despatches, and state papers relating to the negotiations between England and Spain, 1485-1558 | Anonymous | Monograph or Collective Volume | [s.n.] | 1862 |
| Captain John Perry, 1670-1732 | Hamilton, S. B. | Article in Journal | | 1956 |
| Caracena : champion of the Irish, hunter of the Moriscos | O'Scea, Ciaran | Article in Book | | 2004 |
| Catalogue of the library, 1 : Voyages and travel; 2 : Biography, 2 pts.; 3 : Atlases and cartography, 2 pts.; 4 : Piracy and privateering; 5 : Naval history, pt. 1 : the middle ages to 1815. 5+ vols. in 7+ | National Maritime Museum | Monograph or Collective Volume | | 1968 |
| Challoner and St. Patrick's Day | Guazzelli, Victor | Article in Journal | | 1947 |
| Charles de Gaulle and Ireland : a return to the sources | Joannon, Pierre | Article in Book | | 1991 |
| Charles de Gaulle et Eamon de Valera | De Faragorce, B. | Article in Journal | | 1983 |
| Charles de Gaulle, 1946-1958, from resignation to return : the Irish diplomatic perspective | Fanning, Ronan | Article in Book | | 1991 |
| Charles Lever and Italy | Hale, J. R. | Article in Journal | | 1959 |
| Collèges anglais, écossais, irlandais dans les Pays-Bas français (1568-1793) | Trenard, Louis | Article in Book | | 1974 |
| Como and the Book of Durrow | Zarnecki, George | Article in Book | | 1990 |
| Contemporary history | Pick, F. W. | Monograph or Collective Volume | | 1949 |
| Daniel O'Connell and American anti-slavery | Riach, Douglas C. | Article in Journal | | 1976 |
| Daniel O'Connell and Irish-Americans | O'Connell, Maurice R. | Article in Journal | | 1981 |
| Das deutsche Kaiserreich und die irische Frage 1900-1914 | Hünseler, Wolfgang | Monograph or Collective Volume | | 1978 |
| Das Irenkloster Honau und seine Regel | Eberl, Immo | Article in Book | | 1982 |
| Data : What is known about the Irish in North America? | Akenson, Donald Harman | Article in Book | | 1986 |
| Die Iren und die Christianisierung der Baiern | Koller, Heinrich | Article in Book | | 1982 |
| Die Irische Burgerkriegsgefahr im Kalkul der deutschen Gross britannienpolitik in der Julikrise 1914 | Huenseler, Wolfgang | Article in Journal | | 1982 |
| Die Kenntnis der antiken lateinischen literatur bei den Iren in der Heimat und auf dem Kontinent | Rädle, Fidel | Article in Book | | 1982 |
| Die Salzburger Slawenmission im 8./9. Jahrhundert und der Anteil der Iren | Dopsch, Heinz | Article in Book | | 1987 |
| Dutch-Irish cooperation in the mid-eighteenth-century wartime Atlantic | Truxes, Thomas M. | Article in Journal | | 2012 |
| Ecclesiastical Politics and the Counter-Reformation in Ireland, 1618-48 | Kearney, H. F. | Article in Journal | | 1960 |
| Éirinn agus an Eoraip, anall agus anonn | Ó Doibhlin, Breandán | Article in Journal | | 2003 |
| El irlandés conde de O'Reylli, teniente general de los ejércitos de Carlos III y Carlos IV | Orti Belmonte, M. A. | Article in Journal | | 1962 |
| Emerging from the mist : Ireland and Man in the eleventh century | Duffy, Seán | Article in Book | | 2002 |
| Emigrants and exiles : Ireland and the Irish exodus to North America | Miller, Kerby A. | Monograph or Collective Volume | Oxford University Press | 1985 |
| Emigration, 1801-1870 | Fitzpatrick, David | Article in Book | | 1989 |
| England and its neighbours | Given-Wilson, Christopher | Article in Book | | 1996 |
| English radicals and reformers 1760-1848 | Royle, EdwardWalvin, James | Monograph or Collective Volume | | 1982 |
| España y la pérdida del Ulster : Irlanda en la estrategia politica de la monarquía hispánica (1602-1649) | Recio Morales, Óscar | Monograph or Collective Volume | Laberinto | 2003 |
| First link : Parnell's American tour, 1880 | Hazel, M. V. | Article in Journal | | 1980 |
| Francais et idées francaises en irlande de Louis XIV à Napoléon | Fréchet, René | Article in Journal | | 1954 |
| France and Irish nationalism in the eighteenth century | Fuchs, Michel | Article in Book | | 1995 |
| France, Ireland and the 1798 rebellion | Whelan, Kevin | Article in Journal | | 1989 |
| Frances Anne : the life and times of Frances Anne, marchioness of Londonderry, and her husband, Charles, 3rd marquess of Londonderry | Vane-Tempest-Stewart, Edith Helen, marchioness of Londonderry, 1878- | Monograph or Collective Volume | Macmillan | 1958 |
| Francis Turnly, 1766-1845 : a prophet of the United Nations | Kennedy, David | Article in Journal | | 1968 |
| Franco-Irish correspondence : December 1688 - February 1692, 1 | | Monograph or Collective Volume | | 1983 |
| Franco-Irish military relations in the nine years war, 1689-97 | Murtagh, Harman | Article in Book | | 2004 |
| Franco-Irish relations 1500-1610 : politics, migration and trade | Lyons, Mary Ann | Monograph or Collective Volume | Boydell | 2003 |
| French connection II : Robert Emmet and Malachy Delaney's memorial to Napoleon Bonaparte, 1800 | Kleinman, S. | Article in Journal | | 2003 |
| Friar Cherubim O'Daly, O.S.M. c. 1600-1664 | Mooney, C. A. M. | Article in Journal | | 1978 |
| From "victims" of the Melk reform to apostles of the Counter-Reformation : the Irish regular clergy in the Habsburg dominions | Walsh, Katherine | Article in Book | | 1989 |
| From Irish countryside to American city : the settlement and mobility of Ulster migrants in Philadelphia | Mageean, D. M. | Article in Book | | 1991 |
| From merciless invaders : an eye-witness account of the Spanish armada | McKee, Alexander | Monograph or Collective Volume | Souvenir P. | 1963 |
| General Charles O'Hara | Griffin, W. D. | Article in Journal | | 1972 |
| General de Gaulle and Ireland's EEC application | Carroll, J. T. | Article in Book | | 1991 |
| General Francis Burdett O'Connor | Lambert, E. | Article in Journal | | 1977 |
| General Joseph Holt | O'Donnell, Ruán | Article in Book | | 1991 |
| Großbritannien seit 1945 | Mergel, Thomas | Monograph or Collective Volume | Vandenhoeck & Ruprecht | 2005 |
| Henry II as a founder of monasteries | Hallam, Elizabeth M. | Article in Journal | | 1977 |
| History of the Irish College, Paris, 1578-1800 : Calendar of the papers of the Irish College, Paris | Swords, L. | Article in Journal | | 1980 |
| Images de l'Irlande dans la conscience francaise au dix-huitième siècle | Noël, Jean C. | Article in Journal | | 1981 |
| Ireland and Anglo-papal relations, 1880-5 | Woods, C. J. (Christopher John) | Article in Journal | | 1972 |
| Ireland and Europe, 1580-1815 : some historiographical remarks | O'Connor, Thomas | Article in Book | | 2001 |
| Ireland and French strategy during the American war of independence | Beresford, M. H. T. de la P. | Article in Journal | | 1979 |
| Ireland and the antipodes : the heterodoxy of Virgil of Salzburg | Carey, John | Article in Journal | | 1989 |
| Ireland and the campaign against American slavery 1830-1860 | Riach, D. C. | Thesis | | |
| Ireland and the classical world | Freeman, Philip | Monograph or Collective Volume | University of Texas Press | 2001 |
| Ireland and the League of Nations | Keating, P. | Article in Journal | | 1970 |
| Ireland in the Seven Years War | Tierney, Michael | Article in Journal | | 1943 |
| Ireland's foreign relations | Rees, Nicholas | Article in Book | | 2009 |
| Ireland, Britain and Germany, 1871-1914 : problems of nationalism and religion in nineteenth-century Europe | Prill, F. | Monograph or Collective Volume | Gill & Macmillan | 1975 |
| Ireland, de Gaulle and World War II | Keogh, Dermot | Article in Book | | 1991 |
| Ireland, Irishmen and revolutionary America, 1760-1820 | Doyle, David Noel | Monograph or Collective Volume | Mercier Press | 1981 |
| Ireland, telecommunications and international politics, 1866-1922 | De Cogan, Donald | Article in Journal | | 1993 |
| Ireland, the Department of External Affairs, and the United Nations, 1946-55 : a new look | Skelly, Joseph Morrison | Article in Journal | | 1996 |
| Ireland, the Vatican and the Cold War : the case of Italy, 1948 | Keogh, Dermot | Article in Journal | | 1991 |
| Iren in der lothringischen Klosterreform | Semmler, Josef | Article in Book | | 1982 |
| Iren und Angelsachsen in Mitteldeutschland : Zur vorbonifatianischen Mission in Hessen und Thüringen | Werner, Matthias | Article in Book | | 1982 |
| Irisches im Althochdeutschen? | Stresser, I. | Article in Book | | 1982 |
| Irish links with Napoleon | Hayes, Richard Francis | Article in Journal | | 1946 |
| Irish monks in Germany in the late Middle Ages | Ó Fiaich, Tomás | Article in Book | | 1989 |
| Irish nationalism and Anglo-American relations in the late nineteenth and early twentieth centuries | O'Day, Alan | Article in Book | | 2000 |
| Irish officers in the Spanish service | Wall, R. | Article in Journal | | 1978 |
| Irish priests and students in revolutionary France | Swords, Liam | Article in Book | | 1997 |
| Irish Studies, 4 : The Irish in America : Emigration, Assimilation and Impact | | Monograph or Collective Volume | | 1985 |
| Irish travellers in the Norse world | Power, Rosemary | Article in Book | | 1990 |
| Irish-Americans and Anglo-American relations, 1880-1888 | O'Grady, J. P. | Monograph or Collective Volume | [s.n.] | 1976 |
| Irishmen ordained at Prague, 1629-1786 | Hösler, Matthäus | Article in Journal | | 1991 |
| Irland und Europa -Ireland and Europe. Die Kirche im Frühmittelalter - the early Church | | Monograph or Collective Volume | | 1984 |
| Iroschottische und angelsächsische Wanderkulte in Westfalen mit Ausblicken auf den gesamtdeutschen Raum | Schreiber, Georg von | Article in Book | | 1950 |
| James Archer of Kilkenny : an Elizabethan Jesuit : first rector of the Irish College at Salamanca and ally of the great Hugh O'Neill | Morrissey, Thomas J. | Monograph or Collective Volume | Studies, Special Publication | 1979 |
| James Blake and the projected invasion of Galway in 1602 | Jones, Frederick | Article in Journal | | 1950 |
| James Connolly and the United States : the road to the 1916 Irish rebellion | Reeve, Ann BartonReeve, Carl, 1900- | Monograph or Collective Volume | Humanities Press | 1978 |
| Joseph Walshe : Irish foreign policy, 1922-1946 | Nolan, Aengus | Monograph or Collective Volume | Mercier | 2008 |
| Kingdom, emporium and town : the impact of Viking Dublin | Clarke, Howard B. | Article in Journal | | 2000 |
| Kinsale : the Spanish intervention in Ireland at the end of the Elizabethan wars | Silke, John J. | Monograph or Collective Volume | Four Courts | 2000 |
| L'évolution politique de l'Angleterre moderne, 1485-1660 | Braure, MauriceCahen, Lëon | Monograph or Collective Volume | | 1960 |
| La France et l'Irelande (1914-23) | Ducret, Bernard | Article in Journal | | 1984 |
| La France et l'irlande nationaliste de 1860 à 1890 : évolution et mutation de liens multiséculaires | Julienne, Janick | Article in Journal | | 1999 |
| Les Iles Britanniques et la révolution francaise (1789-1803) | Deschamps, Jules | Monograph or Collective Volume | Renaissance de Livre | 1949 |
| Les problèmes du développement au 17ème siècle : deux analyses anglaises : William Temple et Josiah Child | Dockès, Pierre | Article in Journal | | 1967 |
| Letters and memorials of state ... written and collected by Sir Henry Sidney ... Sir Philip Sidney and his brother Sir Robert Sidney ... transcribed from the originals at Penshurst Place in Kent ... and his Majesty's office of papers and records. 2 vols. | | Monograph or Collective Volume | | 1746 |
| List and analysis of state papers, foreign series : Elizabeth I, Vol. 1 : August 1589-90 | | Monograph or Collective Volume | | 1964 |
| Louis XIV and Ireland | Pillorget, René | Article in Book | | 1995 |
| Maria Edgeworth in France and Switzerland : selections from the Edgeworth family letters | | Monograph or Collective Volume | | 1979 |
| Marianus Scotus : scribe and monastic founder | Dilworth, Mark, 1924-2004 | Article in Journal | | 1965 |
| Medieval Scotland & Ireland : overcoming the amnesia | Duffy, Seán | Article in Journal | | 1999 |
| Meeting Salazar: Irish dignitaries and diplomats in Portugal, 1942-1960 | | Article in Journal | | 2011 |
| Nineteenth century Irish explorers in the Levant | Costello, C. | Article in Journal | | 1974 |
| O'Connell and German politics | Alter, Peter | Article in Book | | 1991 |
| O'Connell and the Spanish civil war 1834-39 | O'Connell, Maurice | Article in Book | | 1992 |
| O'Connell's impact on the organisation and development of German political Catholicism | Grogan, Geraldine F. | Article in Book | | 1991 |
| O'Connell, Montalembert and the birth of Christian democracy in France | Joannon, Pierre | Article in Book | | 1991 |
| O'Sullivan Beare in Spain : some unpublished documents | Walsh, M. K. | Article in Journal | | 1990 |
| O'Sullivan Bere : the story of the fight for the southern ports and the great retreat | De Blacam, Aodh | Article in Journal | | 1947 |
| Out of due time : Wilfred Ward and the Dublin Review | Scotti, Paschal, 1961- | Monograph or Collective Volume | Catholic University of America Press | 2006 |
| Papst Gregor der Grosse und Columban der Jüngere | Prinz, Friedrich | Article in Book | | 1984 |
| Partners in revolution : the United Irishmen and France | Elliott, Marianne | Monograph or Collective Volume | [s.n.] | 1982 |
| Perfidious Hispania? Ireland and the Spanish match, 1603-23 | Redworth, Glyn | Article in Book | | 2004 |
| Peter of Ireland : Aquinas's teacher of the artes liberales | Crowe, M. B. | Article in Book | | 1969 |
| Philip II's forgotten armada | García Hernán, Enrique | Article in Book | | 2004 |
| Pilgrimages | Barber, Richard | Monograph or Collective Volume | | 1991 |
| Politics and government in Ireland during the Seven Years War, 1756-63 | Magennis, Eoin Francis | Thesis | | 1996 |
| Primitive Wesleyan Methodism : some further aspects | Taggart, N. W. | Article in Journal | | 1982 |
| Public Record Office, gifts and deposits, Chatham papers | Anonymous | Monograph or Collective Volume | | 1966 |
| Ragnarr Loðbrók in the Irish annals? | McTurk, R. W. | Article in Book | | 1976 |
| Rectors of the Irish College of Salamanca, 1705-67 | Finegan, Francis | Article in Journal | | 1968 |
| Reflections at an anniversary : celebrating 75 years of diplomatic relations between Ireland and the Holy See | | Monograph or Collective Volume | Pontifical Irish College | 2005 |
| Review article : Irish diplomatic history in the twenty-first century | O'Sullivan, Kevin | Article in Journal | | 2010 |
| Richard Cobden and the Protestant ethic | Fisher, Marvin | Article in Journal | | 1963 |
| Salin's style I | Haseloff, G. | Article in Journal | | 1975 |
| Sir Humphrey Gilbert and American colonization | Simmons, Richard C. | Article in Journal | | 1969 |
| Sir Walter Raleigh | Winton, John | Monograph or Collective Volume | | 1975 |
| Sir William de Brian | Yallop, H. J. | Article in Journal | | 1966 |
| Sir William Morgan of Pencoed : "A man to be much accounted of" | Miller, Amos Calvin | Article in Journal | | 1978 |
| Socio-demographic characteristics of Irish immigrants, 1846-1851 | Glazier, I. A.Mageen, DeidreOkeke, Barnabus | Article in Book | | 1989 |
| Some Irish scholars of the sixteenth century | Brady, John, d.1963 | Article in Journal | | 1948 |
| Some problems of the Irish mission, 1733-1774 : documents from Roman archives | | Article in Journal | | 1965 |
| St. Kilian : 1300 Jahre Märtyrium der Frankenapostel. 2 vols. | | Monograph or Collective Volume | | 1989 |
| Stottiana for 1000 years | Stott, M. D.Stott, W. T. | Article in Journal | | 1952 |
| Survivors of the Armada | Hardy, Evelyn | Monograph or Collective Volume | Constable | 1966 |
| Sword and mitre : government and episcopate in France and England in the age of aristocracy | Ravitch, Norman | Monograph or Collective Volume | | 1966 |
| Tánaise ríg : the earliest evidence | Dunn, Marilyn | Article in Journal | | 1999 |
| The age of illusion : manners and morals, 1750-1848 | Laver, James | Monograph or Collective Volume | | 1972 |
| The Algerian attack on Baltimore, 1631 | Barnby, Henry | Article in Journal | | 1970 |
| The archives of St. Isidore's College, Rome | Millett, Benignus | Article in Journal | | 1985 |
| The archives of the Missionary Sisters of the Holy Rosary | Richardson, Cora | Article in Journal | | 1991 |
| The army and politics in Ireland, 1625-30 | Clarke, Aidan | Article in Journal | | 1964 |
| The ballad of Maitland jail | Reece, Bob | Article in Book | | 1991 |
| The bowmen of England : the story of the English longbow | Featherstone, D. | Monograph or Collective Volume | | 1967 |
| The British response to American interest in Northern Ireland, 1976-79 | Devoy, Luke | Article in Journal | | 2014 |
| The character of Norman settlement in Ireland | Otway-Ruthven, Annette Jocelyn, 1909-1989 | Article in Book | | 1965 |
| The Churches, Ireland and the Irish : papers read at the 1987 Summer Meeting and the 1988 Winter Meeting of the Ecclesiastical History Society | | Monograph or Collective Volume | Blackwell Publishers | 1989 |
| The coinages of Edward I and II | North, Jeffrey James | Monograph or Collective Volume | | 1968 |
| The community of St Isidore's College during the second French occupation of Rome, 1810-14 | Millett, Benignus | Article in Journal | | 1990 |
| The consecration of Irish kings | Dillon, Myles | Article in Journal | | 1973 |
| The context and uses of literacy in early Christian Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1998 |
| The cult of St. Brigit | Bowen, E. G. | Article in Journal | | 1973 |
| The culture and ideology of Irish Franciscan historians at Louvain, 1607-1650 | Cunningham, Bernadette | Article in Book | | 1991 |
| The development of the Irish Labour Party's European policy : from opposition to support | Holmes, Michael | Monograph or Collective Volume | Edwin Mellen Press | 2006 |
| The drafting of the constitution of the Union of Burma in 1947 : dominion status, Indo–Burmese relations, and the Irish example | Coffey, Donal K. | Article in Journal | | 2023 |
| The English realm and dominions and the king's subjects in the later middle ages | Griffiths, Ralph Alan, 1937- | Article in Book | | 1986 |
| The fortifications of Lough Swilly and Lough Foyle : temporary expedients, 1798-1800 | McKay, Russell | Article in Journal | | 1977 |
| The four-symbols page in Cracow Cathedral Library MS 140 : an image of unity | Krasnodebska-D'Aughton, Malgorzata | Article in Journal | | 2000 |
| The French are on the sea | Garvin, Tom | Article in Book | | 2000 |
| The geographical distribution of British and Irish emigrants to the United States after 1800 | Gallaway, L. E.Vedder, R. K. | Article in Journal | | 1972 |
| The great melody : a thematic biography and commented anthology of Edmund Burke | O'Brien, C. C. | Monograph or Collective Volume | | 1992 |
| The habit of authority : paternalism in British history | Thornton, A. P. | Monograph or Collective Volume | | 1966 |
| The Hadsors and some other Louth exiles in France and Spain | Walsh, Micheline | Article in Journal | | 1977 |
| The impact of the 1916 rising among the nations | | Monograph or Collective Volume | Irish Academic Press | 2008 |
| The Irish clergy of the diocese of Bordeaux during the revolution | Loupès, Philippe | Article in Book | | 1990 |
| The Irish College in Paris : from penal days seminary to Irish cultural centre | O'Connor, Patrick | Article in Book | | 2009 |
| The Irish Dominican mission to the Danish West Indies, 1758-71 | Fenning, Hugh | Article in Journal | | 1965 |
| The Irish emigrants' guide | Brophy, Liam | Article in Journal | | 1958 |
| The Irish factor in Anglo-American relations | O'Brien, Conor Cruise, 1917-2008 | Monograph or Collective Volume | The English Speaking Union | 1979 |
| The Irish Free State and collective security 1930-6 | Kavanagh, Martha | Article in Journal | | 2004 |
| The Irish Free State and public democracy : The first official visit of William T. Cosgrave to the United States | Carroll, Francis M. | Article in Journal | | 2012 |
| The Irish in North America, 1776-1845 | Doyle, David Noel | Article in Book | | 1989 |
| The Irish in the western Carolingian empire (according to James F. Kenny and Bern, Burgerbibliothek 363) | Contreni, John J. | Article in Book | | 1982 |
| The Irish mission of the seventh century : historical fact or historiographical fiction? | Schaferdiek, Knut | Article in Book | | 1984 |
| The Irish missionary movement : a historical survey, 1830-1980 | Hogan, E. M. | Monograph or Collective Volume | Gill & Macmillan|Catholic University of America Press | 1990 |
| The Irish presence in the north of England, 1850-1914 | Steele, Edward David | Article in Journal | | 1976 |
| The Irish priest in North America | Edwards, Owen Dudley | Article in Book | | 1989 |
| The Irish remonstrance of 1317 : an international perspective | Phillips, J.R.S. (John Roland Seymour) | Article in Journal | | 1990 |
| The Irish student diaspora in the sixteenth century and the early years of the Irish College at Salamanca | Morrissey, Thomas J. | Article in Journal | | 1978 |
| The last illness of Oscar Wilde | Cawthorne, Terence | Article in Journal | | 1959 |
| The last of the Montgomerys : Roger the Poitevin and Arnulf | Chandler, Victoria | Article in Journal | | 1989 |
| The Lehaunstown camp 1795-1799 | Scannell, James | Article in Journal | | 1999 |
| The letter-book of General de Zubiaur : a calendar of the 'Irish' letters | Coombes, JamesWare, N. J. | Article in Journal | | 1978 |
| The letters of Innocent III to Ireland : a calendar ... | | Article in Journal | | 1962 |
| The lives of Roger Casement | Reid, B. L. | Monograph or Collective Volume | Yale University Press | 1976 |
| The marshal duke of Berwick; the picture of an age | Petrie, Charles Alexander, Sir | Monograph or Collective Volume | | 1953 |
| The national spatial strategy as a framework for achieving balanced regional development | Walsh, Jim | Article in Book | | 2002 |
| The Normans and their world | Lindsay, Jack | Monograph or Collective Volume | | 1973 |
| The Origins of Dublin | Wallace, Patrick (Patrick F.) | Article in Book | | 1982 |
| The Oswald mission to Ireland from America : 20 February to 8 June 1793 | St. Mark, J. J. | Article in Journal | | 1988 |
| The overseas trade of Chester in the early 17th century | Stephens, W. B. | Article in Journal | | 1969 |
| The records of the Cabinet Office to 1922 | Anonymous | Monograph or Collective Volume | | 1966 |
| The revolutionary aims of Ireland's forgotten diplomats, 1919-1922 | O'Brien, Ann Marie | Article in Journal | | 2020 |
| The Roman career of John Swayne, archbishop of Armagh 1418-1439 : plans for an Irish hospice in Rome | Walsh, K. | Article in Journal | | 1984 |
| The Scottish soldier in medieval Ireland : the Bruce invasion and the galloglass | Lydon, James F. | Article in Book | | 1992 |
| The second evangelical awakening in Britain | Orr, J. E. | Monograph or Collective Volume | | 1949 |
| The shepherd of the ocean : an account of Sir Walter Raleigh and his times | Adamson, J. H.Folland, H. F. | Monograph or Collective Volume | | 1969 |
| The Sisters of Mercy in the Crimean war | Bolster, Evelyn | Monograph or Collective Volume | Mercier Press | 1965 |
| The Spanish Armada : Captain Cuellar's adventures in Connaught and Ulster, A.D. 1588 | Allingham, Hugh | Monograph or Collective Volume | Sligo County Council | 1985 |
| The strange career of William de la Poer Beresford | Bolton, G. C. (Geoffrey Curgenven) | Article in Book | | 1991 |
| The strange case of Colonel Robert Byrne, 1667 | Meagher, John | Article in Journal | | 1960 |
| The stranger in Ireland : from the reign of Elizabeth to the Great Famine | Maxwell, C. E. | Monograph or Collective Volume | Cape | 1954 |
| The Tirry documents in the Archives de France, Paris | | Article in Journal | | 1957 |
| The Tirry documents in the Augustinian General Archives | Hackett, M. B. | Article in Journal | | 1957 |
| The trouble with Frank Ryan: 'Corpse diplomacy' between East Germany and Ireland, 1966-80 | De Wiel, Jérôme aan | Article in Journal | | 2014 |
| The United States, Britain, and the creation of the Irish Free State | Galbraith, John Semple | Article in Journal | | 1949 |
| The Vocacyon of Johan Bale and early English Autobiography | Fairfield, L. P. | Article in Journal | | 1971 |
| The Writings and Speeches of Edmund Burke, 9, pt. 1 : The Revolutionary War, 1794-1797; 9, pt. 2 : Ireland | Burke, Edmund, 1729-1797McDowell, R. B. (Robert Brendan), 1913-2011 | Monograph or Collective Volume | | 1991 |
| The writings of Father Luke Wadding, O.F.M. | Mooney, Canice | Article in Journal | | 1958 |
| Thomas Carlyle : a descriptive bibliography | | Monograph or Collective Volume | | 1989 |
| Überlieferung und Rezeption der irischen Bussbücher auf dem Kontinent | Kottje, Raymund | Article in Book | | 1982 |
| Virgil of St. Peter's at Salzburg | Wolfram, H. | Article in Book | | 1987 |
| Virgil von Salzburg, Missionar und Gelehrter : Beiträge des internationalen Symposiums vom 21.-24. September 1984 in der Salzburger Residenz | | Monograph or Collective Volume | Saltzburger Landesregierung | 1985 |
| Voluntaryism : an Irish catholic tradition | Carey, Patrick | Article in Journal | | 1979 |
| William Edmundson 1627-1712, 'the great hammer of Ireland' : some new and little-known memorabilia | Edmundson, F. | Article in Journal | | 1953 |
| Willibrord's scriptorium at Echternach and the relationship to Ireland and Lindisfarne | Netzer, Nancy | Article in Book | | 1989 |
| With de Gaulle in Ireland (10 May-19 June 1969) | Flohic, Francois | Article in Book | | 1991 |