| "Imperium in Imperio" : Irish Episcopal Imperialism in the Nineteenth Century | Barr, Colin | Article in Journal | | 2008 |
| 'An ambiguous awe' : Paul Cullen and the historians | Barr, Colin | Article in Book | Four Courts Press | 2011 |
| 'Attending to the wants of poverty' : Paul Cullen, the relief of poverty and the development of social welfare in Ireland | Crossman, Virginia | Article in Book | Four Courts Press | 2011 |
| 'Bulwark of the nations': Paul Cullen, the Christian Brothers, and the evangelization of an Irish empire | Keogh, Dáire | Article in Book | Four Courts Press | 2012 |
| 'Eternity is not long enough nor hell hot enough...' The Catholic Church and Fenianism | Rafferty, Oliver P. | Article in Journal | | 2008 |
| 'I kept my design a profound secret': the nature and impact of the educational provisions of the Penal Laws | Kelly, James, 1959- | Article in Journal | | 2019 |
| 'Not ... an equal, but ... one of his subjects' : John Henry Newman's perception of the archbishop of Dublin | Ker, Ian | Article in Book | | 2011 |
| 'Srong views ... in very strong forms' : Paul Cullen, archbishop of Armagh, 1849-52 | Macaulay, Ambrose | Article in Book | | 2011 |
| A meeting minds? : Margaret Aylward and Paul Cullen | Close, Anne-Marie | Article in Book | | 2011 |
| A new history of the Royal Hibernian Military School : Phoenix Park, Dublin, 1765-1924 | Clarke, Howard R. | Monograph or Collective Volume | Howard R. Clarke | 2011 |
| After the wake - an alternative to Cullen's church | Coll, Niall | Article in Journal | | 1999 |
| An efficacious Irish triumvirate : Paul Cullen, Tobias Kirby and Joseph Dixon | McKinney, Amy | Article in Book | | 2008 |
| Cardinal Cullen : biographical materials | Curran, M. J. | Article in Journal | | 1955 |
| Cardinal Cullen and the National Association of Ireland | Corish, Patrick J. | Article in Book | | 1987 |
| Cardinal Cullen and the system of national education in Ireland | Doyle, Joseph | Article in Book | | 2011 |
| Cardinal Cullen's other capital : Belfast and the 'devotional revolution' | Connolly, Sean J. | Article in Book | | 2011 |
| Cardinal Cullen, early Fenianism, and the MacManus funeral affair | Rafferty, Oliver P. | Article in Journal | | 1995 |
| Cardinal Patrick Francis Moran of Leighlinbridge, 1830-1911 | Ó Fearghail, Fearghus | Article in Book | | 2008 |
| Cardinal Paul Cullen | Larkin, Emmet | Article in Book | | 1998 |
| Cardinal Paul Cullen and his world | | Monograph or Collective Volume | Four Courts | 2011 |
| Carlow and Darwin: Ireland and the age of the earth debate [Part 1] | De Arce, M[iguel]McMillan, N[orman].D.Nevin, M[artin] | Article in Journal | | 2011 |
| Catholic Dublin : the public expression in the age of Paul Cullen | Daly, Mary E. | Article in Book | | 2011 |
| Converging worlds : Paul Cullen in the world of Mauro Cappellari | Korten, Christopher | Article in Book | | 2011 |
| Dr Cullen's appointment to Armagh 1849 | Macaulay, Ambrose | Article in Journal | | 1980 |
| Dublin Hospital Sunday Fund - voluntary hospitals and healthcare c. 1870 | Curran, Joe | Article in Journal | | 2022 |
| Faith, Famine and Fenianism : Paul Cullen and the Irish emigrant world | Moran, Gerard | Article in Book | | 2011 |
| Giuseppe Mazzini and Irish nationalism, 1845-70 | Barr, Colin | Article in Journal | | 2008 |
| History and the shaping of Irish Protestantism | Bowen, Desmond | Monograph or Collective Volume | Peter Lang | 1996 |
| History articles in the 'Irish Ecclesiastical Record', 1950-1968 | Ní Chearbhaill, Máire | Article in Journal | | 2023 |
| Ireland's empire : the Roman Catholic church in the English-speaking world, 1829-1914 | Barr, Colin | Monograph or Collective Volume | Cambridge University Press | 2020 |
| Irish pages from the postbags of Manning, Cullen & Gladstone | Leslie, John Randolph (Shane), 1885–1971 | Article in Journal | | 1919 |
| Key personalities | Fitzpatrick, Margaret,Hartnett, Eoin,O'Riordan, TomásÓ Corráin, Donnchadh, | Article in Book | | 2011 |
| Los Cullen Irlandeses en Canarias y la Argentina | Sánchez Falcón, Emilia | Article in Journal | | 1964 |
| Newman House. History and Associations | Igoe, Vivien | Article in Journal | | 2022 |
| Nicholas Callan - a scrupulous life of faith and science | Hopkins, BrianMcClintock, Peter | Article in Journal | | 2022 |
| O'Connell, Cardinal Cullen and expatriate nationalism | Steele, D. | Article in Book | | 1980 |
| On Church Grounds : Political Funerals and the Contest to Lead Catholic Ireland | Brophy, Thomas J. | Article in Journal | | 2009 |
| Other Cullen tombstones | Mac Suibhne, Peadar | Article in Journal | | 1958 |
| Paul Cardinal Cullen : portrait of a practical nationalist | O'Carroll, Ciaran | Monograph or Collective Volume | Veritas | 2008 |
| Paul cardinal Cullen and the shaping of modern Irish nationalism | Bowen, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Paul Cullen : the great ultramontane | Larkin, Emmet | Article in Book | | 2011 |
| Paul Cullen and his contemporaries : with their letters from 1820 to 1902, 5 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1977 |
| Paul Cullen and his contemporaries, Vol. 4 : with their letters from 1820 - 1902 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1974 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol. 2 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1963 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol. 3 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1965 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol.1 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1961 |
| Paul Cullen and the declaration of papal infallibility | Tanner, Norman | Article in Book | | 2011 |
| Paul Cullen and the Irish College, Paris | Chambers, Liam | Article in Book | | 2011 |
| Paul Cullen and the remaking of Catholicism in the Antipodes | Sweetman, Rory | Article in Book | | 2011 |
| Paul Cullen and the visual arts | Kane, Eileen | Article in Book | | 2011 |
| Paul Cullen in the Irish Conservative imagination | Shields, Andrew | Article in Book | | 2011 |
| Paul Cullen, Italy and the Irish Catholic imagination, 1826-70 | Barr, Colin | Article in Book | | 2014 |
| Paul Cullen, J. J. McCarthy, and Holy Cross church, Clonliffe : the politics and iconography of architectural style | Montague, John | Article in Book | | 2011 |
| Paul Cullen, John Henry Newman, and the Catholic University of Ireland, 1845-1865 | Barr, Colin | Monograph or Collective Volume | University of Notre Dame Press | 2003 |
| Paul Cullen: cardinal and politician | Senior, Hereward | Article in Book | | 1978 |
| Providence, revolution and the conditional defence of the union : Paul Cullen and the Fenians | Kelly, Matthew | Article in Book | | 2011 |
| Reassessing Paul Cullen : an afterword | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2011 |
| Spiritual imperialism and the mission of the Irish race: the Catholic Church and emigration from nineteenth-century Ireland | Roddy, Sarah | Article in Journal | | 2013 |
| That dangerous serpent: Garibaldi and Ireland, 1860-1870 | O'Connor, Anne | Article in Journal | | 2002 |
| The age of Pio Nono : the age of Paul Cullen | Duffy, Eamon, 1947- | Article in Book | | 2011 |
| The Catholic Church's Irishmen in Rome: the correspondence of Paul Cullen and Tobias Kirby | Orschel, Vera | Article in Journal | | 2008 |
| The Catholic University of Ireland: financial contributions from the diocese of Waterford and Lismore | Hearne, John M. | Article in Journal | | 2016 |
| The conversion of Connemara and conflict between Paul Cullen and John MacHale | Moffitt, Miriam | Article in Book | | 2011 |
| The Cullen era | Leslie, John Randolph (Shane), 1885–1971 | Article in Journal | | 1965 |
| The dust of Maynooth : Fenian funeral as political theater - St. Louis, 1865 | Morgan, Jack | Article in Journal | | 1998 |
| The earlier Cullen tombstone | Curran, M. J. | Article in Journal | | 1955 |
| The early Cullen family | Mac Suibhne, Peadar | Article in Journal | | 1958 |
| The Irish Papal Brigade : origins, objectives and fortunes | O'Carroll, Ciarán | Article in Book | | 2014 |
| The Irish-Catholics-in-science debate : John Tyndall, Cardinal Cullen and the uses of science at Castleknock College in the nineteenth century | Murphy, James H. | Article in Book | | 2011 |
| The Maher-Crolly controversy, 1850 | Macaulay, Ambrose | Article in Journal | | 1984 |
| The pastoral letters and other writings of Cardinal Cullen, Archbishop of Dublin ... 3 vols. | | Monograph or Collective Volume | | 1882 |
| The pastoral politics of Paul Cullen | O'Carroll, Ciaran | Article in Book | | 2000 |
| The pastoral vision of Paul Cullen | O'Carroll, Ciaran | Article in Book | | 2011 |
| The politics of Paul Cullen | Delaney, John Francis Pius | Thesis | | 1984 |
| The pope, the prelate, the soldiers and the controversy : Paul Cullen and the Irish Papal Brigade | O'Connor, Anne | Article in Book | | 2011 |
| The radical face of Paul Cardinal Cullen | Corish, Patrick J. | Article in Book | | 1985 |
| The ultramontane spirituality of Paul Cullen | Rafferty, Oliver P. | Article in Book | | 2011 |
| Two letters of Cardinal Cullen, 1871 and 1873 | Walsh, Katherine | Article in Journal | | 1973 |
| Visualizing Ireland's first cardinal | Cullen, Fintan | Article in Book | | 2011 |