| "Her majesty's loyal opposition" : the Unionist party in opposition, 1905-1915 | Dutton, David J. | Monograph or Collective Volume | Liverpool University Press | 1992 |
| '1974 - Year of Liberty'? The Provisional IRA and Sunningdale | Patterson, Henry | Article in Book | | 2017 |
| 'Meddling at the crossroads' : the decline and fall of Terence O'Neill within the Unionist community | Cochrane, Feargal | Article in Book | | 1996 |
| 'Slow learners'? Comparing the Sunningdale Agreement and the Belfast/Good Friday Agreement | Hennessey, Thomas | Article in Book | | 2017 |
| 'The right flower to stick to': the Unionist Party's questionable choice in 1959 | Smyth, Peter | Article in Journal | | 2014 |
| 'Who is for the Empire and who is for the Republic?' - The 1921 elections to the Northern Ireland Parliament | Callinan, Elaine | Article in Journal | | 2021 |
| (Appendix:) The Sunningdale Agreement (December 1973) | | Article in Book | | 2017 |
| (Sunningdale) Introduction | McCann, DavidMcGrattan, Cillian | Article in Book | | 2017 |
| A history of the Ulster Unionist Party : protest, pragmatism and pessimism | Walker, Graham | Monograph or Collective Volume | Manchester University Press | 2004 |
| Autobiography | O'Neill, Terence | Monograph or Collective Volume | Hart-Davis | 1972 |
| British government policy post 1974: learning slowly between Sunningdales? | O'Kane, Eamonn | Article in Book | | 2017 |
| British security policy and the Sunningdale Agreement: the consequences of using force to combat terrorism in a liberal democracy | Edwards, Aaron | Article in Book | | 2017 |
| Cultural responses to and the legacies of Sunningdale | Parr, Connal | Article in Book | | 2017 |
| David Trimble | McDonald, Henry | Monograph or Collective Volume | Bloomsbury | 2000 |
| Devolution and the Northern Ireland assembly : the way forward | Ulster Unionist Party | Monograph or Collective Volume | Ulster Unionist Party | 1984 |
| Enoch Powell | Shepherd, Robert | Monograph or Collective Volume | Hutchinson | 1996 |
| Enoch Powell | Shepherd, Robert | Monograph or Collective Volume | Hutchinson | 1996 |
| Guns for democracy's table : a review of the physical force unionism of the Ulster Unionist Party | North West Labour Publications | Monograph or Collective Volume | North West Labour Publications | 1998 |
| Harry Midgley | Mac Caba, Anton | Article in Journal | | 1993 |
| Himself alone : David Trimble and the ordeal of unionism | Godson, Dean | Monograph or Collective Volume | HarperCollins | 2004 |
| James Chichester-Clark : prime-minister of Northern Ireland | Scoular, Clive | Monograph or Collective Volume | The author | 2000 |
| Labour and the Northern Ireland problem, 1945-1951 : the missed opportunity | Rees, R. (Russell) | Monograph or Collective Volume | Irish Academic Press | 2009 |
| Molyneaux : the long view | Purdy, Ann | Monograph or Collective Volume | Greystone | 1989 |
| Northern Ireland 1921-1973 : party manifestos and platforms | Elliott, SydneyLaver, Michael | Article in Book | | 1987 |
| Northern Ireland : a triumph of politics : interviews and analysis 1988 - 2008 | Millar, Frank I. | Monograph or Collective Volume | Irish Academic Press | 2009 |
| Northern Ireland parliamentary election results, 1921-72 | Elliott, Sydney | Monograph or Collective Volume | Political Reference Publications | 1973 |
| Northern Ireland since 1968 | Arthur, Paul, 1945-Jeffery, Keith | Monograph or Collective Volume | Blackwell Publishers | 1996 |
| Not by might : a journey in faith and politics : the authorised biography of Jeffrey Donaldson, M.P. | Davidson, Noel I. | Monograph or Collective Volume | Ambassador | 2004 |
| Post-agreement electoral decline : the Ulster Unionist Party and the problem of decommissioning | Southern, Neil | Article in Journal | | 2018 |
| Power sharing and the Irish dimension: the conundrum for the SDLP in Northern Ireland | Campbell, Sarah | Article in Book | | 2017 |
| Same but different? the Democratic Unionist Party and Ulster Unionist Party compared | Braniff, MáireHennessey, ThomasMcAuley, James W.Tonge, JonathanWhiting, Sophie A. | Article in Journal | | 2020 |
| Stan Orme and the road to 'Industrial Democracy': British attempts at the politicisation of working-class Protestants in Northern Ireland, 1973-75 | Craig, Tony | Article in Book | | 2017 |
| Sunningdale and the Irish dimension: a step too far? | Coakley, John | Article in Book | | 2017 |
| Sunningdale and the limits of 'rejectionist' Unionism | Aveyard, StuartMcDaid, Shaun | Article in Book | | 2017 |
| Sunningdale, the Ulster Workers' Council strike and the struggle for democracy in Northern Ireland | | Monograph or Collective Volume | Manchester University Press | 2017 |
| The Anglo-Irish agreement 3 years later | Ulster Unionist Party | Monograph or Collective Volume | Ulster Unionist Party | 1990 |
| The Anglo-Irish treaty of 1921 : Unionist aspects of the peace | Fair, John D. | Article in Journal | | 1972 |
| The development of party competition among Unionists in Ulster 1966-82 | Diskin, Michael | Monograph or Collective Volume | Centre for the Study of Public Policy, University of Strathclyde | 1984 |
| The early political career of Sir James Craig, 1906-14 | Daly, Terence Patrick | Thesis | | 2002 |
| The electoral system in Northern Ireland since 1920 | Elliott, Sydney | Thesis | | |
| The Irish connection | Boyce, David George, 1942- | Article in Book | | 1989 |
| The life of Lord Carson | Colvin, Ian Duncan | Monograph or Collective Volume | Gollancz | 1936 |
| The life of Lord Carson. vol. 2 | Colvin, Ian | Monograph or Collective Volume | | 1934 |
| The limit of "New Unionism" : David Trimble and the Ulster Unionist Party | Patterson, Henry | Article in Journal | | 2004 |
| The Northern Ireland Agreement : clear, consociational, and risky | Horowitz, Donald L. | Article in Book | | 2001 |
| The origins of the Ulster Unionist Party, 1885-6 | Savage, D. C. | Article in Journal | | 1961 |
| The political parties and social background | Sayers, John E. | Article in Book | | 1955 |
| The politics of constitutional nationalism in Northern Ireland, 1932-79 : between grievance and reconciliation | Norton, Christopher | Monograph or Collective Volume | Manchester UP | 2014 |
| The state in Northern Ireland 1921-72 | Bew, PaulGibbon, PeterPatterson, Henry | Monograph or Collective Volume | Manchester University Press | 1979 |
| The Ulster Covenant in Donegal, 1912 | O'Connell, Aidan | Article in Journal | | 2011 |
| The Ulster Unionist Party and the Bannside by-election 1970 | Walker, Graham | Article in Journal | | 2004 |
| The Ulster Unionist Party and the U.S. role in the Northern Ireland peace process, 1994-2000 | Wilson, Andrew J. | Article in Journal | | 2000 |
| The Ulster Unionist Party, 1882-1973 : its development and organisation | Harbinson, John Fitzsimons | Monograph or Collective Volume | Blackstaff Press | 1973 |
| The Ulster Unionist Party, 1972-1992 | Hume, David, 1964- | Monograph or Collective Volume | Ulster Society | 1996 |
| The Ulster Workers' Council strike: the perfect storm | Gillespie, Gordon | Article in Book | | 2017 |
| The unionist party and Ireland, 1906-10 | Fanning, J. R. | Article in Journal | | 1966 |
| Transforming unionism : David Trimble and the 2005 General Election | Kerr, Michael, 1973- | Monograph or Collective Volume | Irish Academic Press | 2006 |
| Trimble | McDonald, Henry | Monograph or Collective Volume | Bloomsbury | 2000 |
| Ulster Unionist Party leadership election | Aughey, Arthur | Article in Journal | | 1996 |
| Ulster Unionist Party. The Anglo-Irish Agreement : 3 years later | Anonymous | Monograph or Collective Volume | Ulster Unionist Party | 1988 |
| Understanding aspiration, anxiety, assumption and ambiguity: the anatomy of Sunningdale | Aughey, Arthur | Article in Book | | 2017 |
| Unionism and the new century: the structure, organisation and mechanics of the Unionist Party in Britain and Ulster, 1900-1922 | Burnett, David Andrew | Thesis | | 1995 |
| United we stood : the official history of the Ulster Women's Unionist Council, 1911-1974 | Kinghan, Nancy | Monograph or Collective Volume | Appletree Press | 1975 |