| "A poor thing but our own" : The Joint Intelligence Committee and Ireland, 1965-72 | O'Halpin, Eunan | Article in Journal | | 2008 |
| "A wild Capuchin of Cork" : Arthur O'Leary (1729-1802) | Kelly, James, 1959- | Article in Book | Four Courts Press | 1998 |
| "An Irishman is specially suited to be a policeman" : Sir Charles Tegart and revolutionary terrorism in Bengal | Silvestri, Michael | Article in Journal | | 2000 |
| "How did they pass the Union?" : Secret Service expenditure in Ireland 1799-1804 | Wilkinson, David | Article in Journal | | 1997 |
| "Notes on Eire" : espionage reports to Winston Churchill, 1940-2 | Bowen, Elizabeth Dorothea Cole, 1899-1973Clifford, BrendanLane, Jack, 1945- | Monograph or Collective Volume | Aubane Historical Society | 1999 |
| "Put one Irishman on a spit and another will turn him": a postrevolutionary episode in South Carlow, 1804 | Patterson, James G. | Article in Journal | | 2018 |
| "The glorious dead"? : commemorating the security forces in Northern Ireland | Switzer, Catherine | Article in Book | | 2005 |
| "The indispensable informer": Daniel O'Sullivan Goula and the Phoenix Society, 1858-59 | Kennedy, Padraic | Article in Journal | | 2010 |
| "The invasion that never was" : naval and military aspects of the French expedition to Bantry Bay, 1796 | Bartlett, Thomas | Article in Book | Mercier Press | 1997 |
| "Underhand Dealings with the Papal Authorities" : Disraeli and the Liberal Conspiracy to Disestablish the Irish Church | Kennedy, Padraic C. | Article in Journal | | 2008 |
| "Weird prophecies" : British intelligence and Anglo-Irish relations, 1932-3 | O'Halpin, Eunan | Article in Book | Four Courts Press | 2000 |
| 'Dancing Jimmy' : Pinkerton agent James McParland and the Molly Maguires | Kelly, Barry | Article in Journal | | 2010 |
| 'Enthusiasm and subdued excitement': John Sharkey and the 1918 General Election | Marnane, Denis G. | Article in Journal | | 2018 |
| 'For the preservation of the slate' : Irish domestic security, legislation, 1939-40 | O'Neill, Michael S. | Article in Journal | | 2002 |
| 'Lusitania' : unravelling the mysteries | O'Sullivan, Patrick | Monograph or Collective Volume | Collins | 1998 |
| 'No ordinary campaign' : the British Government's search for a security strategy during the Northern Ireland Conflict, 1972-94 | Hurley, Timothy | Thesis | | |
| 'Persuade an alternative candidate to stand' : why Ireland was elected to the United Nations Security Council in 1961 | Kennedy, Michael (Michael J.) | Article in Book | | 2005 |
| 'Plato's cave'? Ireland's wartime neutrality reassessed | Kennedy, Michael (Michael J.) | Article in Journal | | 2011 |
| 'Spies and informers beware!' | Ó Ruairc, Pádraig Óg | Article in Journal | | 2017 |
| 'Warfare of the dirtiest, filthiest kind' | King, Tony | Article in Journal | | 2018 |
| A Dubliner in British military intelligence | Silver, Patricia | Article in Journal | | 2014 |
| A soldier under two flags : Lieutenant Colonel James Florence Burke : officer, adventurer and spy | Pyne, Peter | Article in Journal | | 1998 |
| A state of denial : British collaboration with Loyalist paramilitaries | Urwin, Margaret | Monograph or Collective Volume | Mercier Press | 2016 |
| A Stillorgan family remembers the Local Security Force | Traynor, John | Article in Journal | | 2016 |
| A tale of 1798 | McDonald, Tom | Article in Journal | | 2010 |
| A tale of German espionage in wartime Ireland | Hull, Mark M. | Article in Book | | 2004 |
| A US spy in Ireland | Quigley, Martin S. | Monograph or Collective Volume | Marino Books | 1999 |
| A very British jihad : collusion, conspiracy and cover-up in Northern Ireland | Larkin, Paul | Monograph or Collective Volume | Beyond the Pale | 2004 |
| Agents of Influence: Britain’s Secret Intelligence War Against the IRA | Edwards, Aaron | Monograph or Collective Volume | Merrion Press | 20 |
| Ambush at Tully-West : the British intelligence service in action | Lindsay, Kennedy | Monograph or Collective Volume | Dunrod Press | 1980 |
| An enemy of the crown : the British secret service campaign against Charles Haughey | Burke, David | Monograph or Collective Volume | Mercier Press | 2022 |
| An IRA Observation Post at Candroma, County Cork | Chambers, ColmHarte, Aidan | Article in Book | | 2017 |
| An Irish cavalier : Daniel O'Neill | Cregan, Donal F. | Article in Journal | | 1965 |
| An Irish informer in Restoration England : David Fitzgerald and the "Irish plot" in the Exclusion Crisis, 1679-1681 | Gibney, John, 1976- | Article in Journal | | 2007 |
| Andrew O'Sullivan - an unlikely patriot | Myers, Kevin | Article in Journal | | 2018 |
| Anglo-Irish security co-operation since 1969 : a Dublin perspective | O'Halpin, Eunan | Article in Journal | | 1990 |
| Aspects of intelligence | O'Halpin, Eunan | Article in Journal | | 1993 |
| At War Over the Espionage Act in Portland : Dueling Perspectives from Kathleen O'Brennan and Agent William Bryon | Hodges, Adam J. | Article in Journal | | 2007 |
| Big boy's rules : the secret struggle against the IRA | Urban, Mark | Monograph or Collective Volume | Faber | 1992 |
| Blake, Bourke and the end of empires | O'Connor, Kevin | Monograph or Collective Volume | Prendeville Publications | 2003 |
| Bloody Sunday : error or design? | Ó Dochartaigh, Niall | Article in Journal | | 2010 |
| Bombs, bullets and the Border - Policing Ireland's frontier: Irish security policy, 1969-78 | Mulroe, Patrick | Monograph or Collective Volume | Irish Academic Press | 2017 |
| Bram Stoker's 'Great Game'? | Greene, Martin | Article in Journal | | 2022 |
| Breaking faith : Elizabeth Bowen and disloyalties | Lee, Hermione | Article in Book | | 2016 |
| British Army intelligence in provincial Ireland, 1919-1921 : organisation, outcomes and the 6th Division blacklist | Bielenberg, Andy ; Borgonovo, John | Article in Journal | | 2023 |
| British brutality in Ireland | O'Brien, JackO'Dwyer, Paul | Monograph or Collective Volume | Mercier Press | 1989 |
| British imperial intelligence and anticolonial revolutionaries during and after the Great War | Silvestri, Michael | Article in Book | | 2022 |
| British intelligence and covert action | Block, JonathanFitzgerald, Patrick | Monograph or Collective Volume | Brandon | 1983 |
| British intelligence and the Anglo-Irish truce, July - December, 1921 | Mc Mahon, Paul | Article in Journal | | 2007 |
| British intelligence in Ireland, 1914-1921 | O'Halpin, Eunan | Article in Book | | 1984 |
| British intelligence in Ireland, 1920-21 : the final reports | | Monograph or Collective Volume | Cork University Press | 2002 |
| British intelligence, the republican movement and the IRA's German links, 1935-45 | O'Halpin, Eunan | Article in Book | | 2003 |
| British signals intelligence and the 1916 Easter Rising in Ireland | Larsen, Daniel | Article in Journal | | 2018 |
| British spies and Irish rebels : British intelligence in Ireland, 1916-1945 | McMahon, Paul | Monograph or Collective Volume | Boydell | 2008 |
| British spy system in 1920-21, intelligence chief's revelations - incident in Co. Wicklow recounted | Noonan, P. J. | Article in Journal | | 2001 |
| British voices from the Irish war of independence, 1918-1921 : the words of British servicemen who were there | Sheehan, William, 1968- | Monograph or Collective Volume | Collins Press | 2005 |
| Brits : the war against the IRA | Taylor, Peter, 1942- | Monograph or Collective Volume | Bloomsbury | 2001 |
| Canadian spy story : Irish revolutionaries and the secret police | Wilson, David A. | Monograph or Collective Volume | McGill-Queens University Press | 2022 |
| Captain Herman Goertz and the Laragh connection | Scannell, James | Article in Journal | | 2004 |
| Captain MacSheehy's mission | Brock, F. W. van | Article in Journal | | 1972 |
| Casement and British intelligence | Andrew, Christopher M. | Article in Book | | 2005 |
| Changing direction : defensive planning in a post-conflict city | Cunningham, Tim | Article in Journal | | 2014 |
| Charles 'Nomad' McGuinness, being the true account of the amazing adventures of a Derryman, pirate, IRA man, gunrunner, polar explorer, adventurer, mercenary, rogue, escaper and hero | McGuffin, JohnMulheron, Joseph | Monograph or Collective Volume | Irish Resistance Books | 2002 |
| Charlie One : the true story of an Irishman in the British Army and his role in covert counter-terrorism operations in Northern Ireland | Hartnett, Seán | Monograph or Collective Volume | Merrion Press | 2016 |
| Code breaker : the untold story of Richard Hayes, the Dublin librarian who helped turn the tide of World War II | Mc Menamin, Marc | Monograph or Collective Volume | Gill Books | 2018 |
| Collins and intelligence 1919-1923 : from brotherhood to bureaucracy | O'Halpin, Eunan | Article in Book | | 1998 |
| Colonel Dan Bryan and the evolution of Irish military intelligence, 1919-1945 | Biddlecombe, Darragh | Thesis | | 1999 |
| Comhcheilg sa Chaisleán | Ó Broin, León, 1902-1990 | Monograph or Collective Volume | Sáirseal agus Dill | 1963 |
| Countering Irish Republican Terrorism in Britain : Its Origin as a Police Function | Clutterbuck, Lindsay | Article in Journal | | 2006 |
| Countering terrorism in Northern Ireland : the role of intelligence | Kirk-Smith, Michael ; Dingley, James | Article in Journal | | 2009 |
| Creating conspiracies: John Toland's 'Art of Restoring'and Hanoverian paranoia | Brown, Michael | Article in Journal | | 2010 |
| Crimes of loyalty : a history of the UDA | Wood, Ian S. | Monograph or Collective Volume | Edinburgh University Press | 2006 |
| Cumann na mBan activity in Clare 1917-1921 | Houlihan, Margaret | Article in Journal | | 2018 |
| Daniel O'Neill, a royalist agent in Ireland, 1644-50 | Cregan, Donal F. | Article in Journal | | 1941 |
| Dead ground : infiltrating the IRA | Gilmour, Raymond | Monograph or Collective Volume | Little & Brown | 1998 |
| Decoding the IRA | Gillogly, James J., 1946-Mahon, Tom (Thomas G.) | Monograph or Collective Volume | Mercier Press | 2008 |
| Deutsche spione in Irland : legende und Wirklichkeit | Stephan, Enno | Article in Book | | 1998 |
| Disrupt and deny : spies, special forces, and the secret pursuit of British foreign policy | Cormac, Rory | Monograph or Collective Volume | Oxford University Press | 2018 |
| DMP casualties during the Irish War of Independence [Part 1]|Part 2 | Scannell, James | Article in Journal | | 2016 |
| Dobbeltspill : kjærlighet og forræderi i skyggen av første verdenskrig | Godøy, Bjørn | Monograph or Collective Volume | Spartacus | 2017 |
| Document: Letter of Frederick H. Armitage of Noan to his family following the IRA killing of estate employee David Cummins | Marnane, Denis G. | Article in Journal | | 2024 |
| Dr Hermann Goertz : a German spy in south County Dublin | Kennedy, Brian P. | Article in Book | | 2012 |
| Dr Hermann Goertz : a German spy in south County Dublin | Kennedy, Brian P. | Monograph or Collective Volume | Foxrock Local History Club | 1991 |
| Dudley Bradstreet : a Tipperary spy and adventurer | O'Donoghue, James, d. 2004 | Article in Journal | | 1992 |
| East German intelligence and Ireland, 1949-90 : espionage, terrorism and diplomacy | De Wiel, Jérôme aan | Monograph or Collective Volume | Manchester UP | 2015 |
| Elizabeth Bowen : "Notes on Eire" : Espionage Reports to Winston Churchill, 1940-2, with a Review of Irish Neutrality in World War 2 by Jack Lane and Brendan Clifford | Bowen, Elizabeth Dorothea Cole, 1899-1973Clifford, BrendanLane, Jack, 1945- | Monograph or Collective Volume | Aubane Historical Society | 2009 |
| Elizabeth Bowen : more of her espionage reports from Ireland to Winston Churchill | Bowen, Elizabeth Dorothea Cole, 1899-1973Lane, Jack, 1945- | Monograph or Collective Volume | Aubane Historical Society | 2009 |
| England's greatest spy : Eamon de Valera : a biography | Turi, John J. | Monograph or Collective Volume | Stacey International | 2009 |
| English Military Intelligence in Ireland during the Wars of the Three Kingdoms | Ó Siochrú, Micheál | Article in Book | | 2006 |
| External Intelligence and the Civil War | O'Halpin, Eunan | Article in Journal | | 1997 |
| Fenians, spies and army mutiny: the unravelling of the Tipperary IRB in 1865-66 | O'Keeffe, Mark | Article in Journal | | 2017 |
| Florence O'Donoghue | Borgonovo, John | Article in Book | | 2017 |
| French military intelligence and Ireland, 1900–1923 | de Wiel, Jérôme aan | Article in Journal | | 2011 |
| From College Street, Carlow to Kanchanaburi. Lance Corporal James (Jim) Hickey, Service no.3527490 351 Field Security Section Intelligence Corps | Hickey, Tom | Article in Journal | | 2018 |
| From counter-insurgency to internal security : Northern Ireland, 1969-1992 | Newsinger, John | Article in Journal | | 1995 |
| From counter‐insurgency to internal security : Northern Ireland 1969–1992 | Newsinger, John | Article in Journal | | 1995 |
| From direct rule to Motorman : adjusting British military strategy for Northern Ireland in 1972 | Bennett, Huw | Article in Journal | | 2010 |
| From Drumconrath to Van Diemen's Land: John Donnellan Balfe (1816-80) [Part 1] | Cusack, Danny | Article in Journal | | 2024 |
| From Northern Ireland to Afghanistan : British military intelligence operations, ethics and human rights | Moran, Jon | Monograph or Collective Volume | Ashgate | 2013 |
| Fuentes de inteligencia y hemerográficas británicas en la difusión de información sobre el escenario marítimo en Galicia, 1739–1742 | Amenedo-Costa, Mónica | Article in Book | | 2022 |
| G2 : In defence of Ireland : Irish military intelligence, 1918-45 | Walsh, Maurice | Monograph or Collective Volume | Collins Press | 2009 |
| Geheimauftrag Irland. Deutsche Agenten im irischen Untergrundkampf 1939-1945 | Stephan, Enno | Monograph or Collective Volume | Gerhard Stalling Verlag | 1961 |
| George Orwell & Sean O'Casey : two prickly characters intersect | Mitchell, Arthur | Article in Journal | | 1998 |
| German espionage in south county Dublin | Scannell, James | Article in Journal | | 2002 |
| German internees at the Curragh Camp | Diver, Luke | Article in Journal | | 2017 |
| German invasion and spy scares in Ireland, 1890s-1914: Between fiction and fact. | De Wiel, Jérðme aan | Article in Journal | | 2012 |
| German violations of irish neutrality during the Second World war | Barry, Kevin | Article in Journal | | 2012 |
| Government surveillance of subversion, 1890-1916 | Lane, Pádraig G. | Article in Book | | 1999 |
| Guarding neutral Ireland : the coast watching service and military intelligence, 1939-1945 | Kennedy, Michael (Michael J.) | Monograph or Collective Volume | Four Courts | 2008 |
| Guerrilla warfare in the Irish War of Independence, 1919-1921 | McKenna, Joseph | Monograph or Collective Volume | McFarland | 2011 |
| Guests of the state | Dwyer, T. Ryle | Article in Book | | 2004 |
| Hermann Goertz (Görtz), the Brittas Bay spy | Brennan, Stephen | Article in Journal | | 2014 |
| Hermann Goertz in Ireland and his tragic death | Carroll, Joe | Article in Journal | | 2011 |
| Hidden in plain sight | Schaefer, Kate Murphy | Article in Journal | | 2018 |
| Hide and seek : the Irish priest in the Vatican who defied the Nazi command. A dramatic true story of rivalry and survival during WWII | Walker, Stephen | Monograph or Collective Volume | Collins | 2011 |
| Hide, seek and negotiate : Alfred Cope and counter intelligence in Ireland, 1919-1921 | Sloan, Geoffrey R. | Article in Journal | | 2018 |
| Informers, agents, the IRA and British counter-insurgency strategy during the Northern Ireland Troubles, 1969 to 1998 | Leahy, Thomas Daniel Melchizadek | Thesis | | |
| Informers, informants and information : the secret history of the 1790s reconsidered | Bartlett, Thomas | Article in Book | | 2003 |
| Informers, intelligence and the 'Anti-Sinn Féin Society': the Anglo-Irish conflict in Cork city, 1920-21 | Borgonovo, John | Thesis | | 1997 |
| Intelligence and Anglo-Irish relations, 1922-73 | O'Halpin, Eunan | Article in Book | | 2006 |
| Intelligence and controversial British interrogation techniques: the Northern Ireland case, 1971-2 | Newbery, Samantha | Article in Journal | | 2009 |
| Intelligence and counter-insurgency operations : some reflections on the British experience | Jeffery, Keith | Article in Journal | | 1987 |
| Intelligence and security in Ireland, 1922-45 | O'Halpin, Eunan | Article in Journal | | 1990 |
| Intelligence notes, 1913-1916, preserved in the State Paper Office | | Monograph or Collective Volume | The Stationery Office | 1966 |
| Intelligence Wars : Ireland and Afghanistan – The American Experience | Mumford, Andrew | Article in Journal | | 2005 |
| Intelligence, statecraft and international power; papers read before the 27th Irish Conference of Historians held at Trinity College, Dublin 19-21 May 2005 : Historical Studies XXV | | Monograph or Collective Volume | Irish Academic Press | 2006 |
| Intelligence, the English navy and Ireland during the 1640s | Murphy, Elaine | Article in Book | | 2006 |
| Inter- and intra-agency intelligence liaison during ‘the troubles’ | Newbery, Samantha | Article in Journal | | 2021 |
| Interrogations, ill-treatment and intelligence : Northern Ireland, 1970-1974 | Newberry, Samantha | Thesis | | 2009 |
| Ireland and collective security | Tonra, Ben | Article in Book | | 2005 |
| Ireland defined : espionage through the ages | Mahoney, Harry ThayerMahoney, Marjorie Locke | Monograph or Collective Volume | Academia Press|Academia Press | 2001 |
| Ireland in spy fiction | Jeffery, KeithO'Halpin, Eunan | Article in Journal | | 1991 |
| Ireland, India and empire : Indo-Irish radical connections, 1919-1964 | O'Malley, Kate | Thesis | | 2006 |
| Irish government security policy along the border 1969-1978 | Mulroe, Patrick | Thesis | | |
| Irish Intelligence and British war planning, 1910-14 | Jeffery, Keith | Article in Book | | 2006 |
| Irish priests and students in revolutionary France | Swords, Liam | Article in Book | | 1997 |
| Irish Republican Army Counterintelligence | Ilardi, Gaetano Joe | Article in Journal | | 2010 |
| Irish secrets : German espionage in Ireland, 1939-1945 | Hull, Mark M. | Monograph or Collective Volume | Irish Academic Press | 2003 |
| Irish spies and plotters in seventeenth-century Europe | Marshall, Alan | Article in Journal | | 1994 |
| James Fitzpiers Fitzgerald, Captain Thomas Lee, and the problem of 'secret traitors': conflicted loyalties during the Nine Years' War, 1594-1603 | Canning, Ruth A. | Article in Journal | | 2015 |
| James Larkin and the British, American and Irish Free State Intelligence Services: 1914-1924 | Watts, Gerard | Thesis | | 2016 |
| John Ardagh (1840-1907): The Irish intelligence scapegoat for Britain's Anglo-Boer war debacles | McCracken, Donal P. | Article in Journal | | 2013 |
| John Daniel of Daresbury, 1544-1610 | Chesters, Geoffrey | Article in Journal | | 1967 |
| John Donellan Balfe and 1848 : a note on a confederate informer | Koseki, Takashi | Article in Journal | | 1998 |
| John Francis O'Reilly : the "flighty" boy from Clare | Kinsella, Anthony | Article in Journal | | 2006 |
| John Hughes, reluctant agent provocateur and millennarian : a note and new documents | Durey, Michael | Article in Journal | | 1992 |
| John Kenny and the Easter Rising | Christ, Fran | Article in Journal | | 1997 |
| Keeping the lid on an Irish Revolution : the Gosselin-Balfour correspondence | McGee, Owen | Article in Journal | | 2007 |
| Killings of local security forces in Northern Ireland 1969–1981 | Murray Russell | Article in Journal | | 1983 |
| Kilmacud Manor, W.J. Fitzpatrick and the sham squire | Sobolewski, Peter | Article in Journal | | 2021 |
| La misión secreta de D. Ricardo Wall en Londres (1747-1748) | Téllez Alarcia, Diego, 1975- | Article in Journal | | 2000 |
| Legal aspects of the Irish secret service fund, 1793-1833 | McEldowney, J. F. | Article in Journal | | 1986 |
| Leonard MacNally - the most disreputable barrister to have ever practiced at the Irish bar? | O'Connor, Eoin | Article in Journal | | 2015 |
| Long fellow, long story : MI5 and de Valera | O'Halpin, Eunan | Article in Journal | | 2003 |
| Loyalist mobilization and cross-border violence in rural Ulster, 1972-1974 | Burke, Edward | Article in Journal | | 2022 |
| Loyalist mobilization and cross-border violence in rural Ulster, 1972-1974 | Burke, Edward | Article in Journal | | 2022 |
| Loyalist supergrass trials: an opportunity for open source intelligence? | Monaghan, Rachel | Article in Journal | | 2019 |
| M : MI5's first spymaster | Cook, Andrew | Monograph or Collective Volume | Tempus | 2004 |
| Making sense of the Molly Maguires | Kenny, Kevin, 1960- | Monograph or Collective Volume | Clarendon Press | 1998 |
| Metropolitan surveillance and rural opacity : secret photography in nineteenth-century Ireland | Baylis, Gail | Article in Journal | | 2009 |
| MI5 and Ireland, 1939-1945 : the official history | | Monograph or Collective Volume | Irish Academic Press | 2003 |
| MI5's Irish memories : fresh light on the origins and rationale of Anglo-Irish security liaison in the Second World War | O'Halpin, Eunan | Article in Book | | 2000 |
| Michael Collin's intelligence war : the struggle between the British and the I.R.A., 1919-1921 | Foy, Michael T. | Monograph or Collective Volume | Sutton | 2006 |
| Michael Collins and the Anglo-Irish War : Britain's counterinsurgency failure | Hittle, J. B. E. | Monograph or Collective Volume | Potomac Books | 2011 |
| Michael Collins and the Intelligence War | Foy, Michael | Article in Book | | 2017 |
| Michael Collins and the organisation of Irish intelligence, 1917-21 | McInerney, Colm | Article in Journal | | 2003 |
| Michael Collins's intelligence war : the struggle between the British and the IRA, 1919-1921 | Foy, Michael T. | Monograph or Collective Volume | Sutton | 2008 |
| Modern Franco-Irish Military Connections | Hodson, Tom | Article in Journal | | 2022 |
| Mr Robertson of Ratisbon | G., A. M. | Article in Journal | | 1942 |
| My role as an intelligence officer with the third Tipperary brigade (1919-1921) | Sharkey, Seán | Article in Journal | | 1998 |
| Neglected Intelligence : How the British Government Failed to Quell the Ulster Volunteer Force, 1912-1914 | Grob-Fitzgibbon, Benjamin John | Article in Journal | | 2006 |
| Neutral shores : Ireland and the Battle of the Atlantic | McShane, Mark | Monograph or Collective Volume | Mercier | 2012 |
| New evidence on IRA/Nazi links | O'Donoghue, David | Article in Journal | | 2011 |
| Nineteenth-century nimbys, or what the neighbour saw? poverty, surveillance, and the boarding-out of Poor Law children In late nineteenth-century Belfast | Purdue, Olwen | Article in Journal | | 2020 |
| Northern Ireland: the intelligence war, 1969-75 | Sanders, Andrew | Article in Journal | | 2011 |
| Notes and documents. A Franco-Irish spy in 1796 | Alger, J. G. | Article in Journal | | 1901 |
| Notes and documents: Papers relating to the Irish rebellion of 1798 | Marsden, AnthonyParish, J.Ross, H. | Article in Journal | | 1910 |
| Notes. Coastal signal stations in Ireland, 1814 | Kerrigan, Paul M. | Article in Journal | | 2005 |
| Official list of radical activists and suspected activists involved in Emmet's rebellion, 1803 | | Article in Journal | | 2012 |
| Old prejudices and new prejudices :state surveillance and harassment of Irish and Jewish communities in London – 1800-1930 | Renshaw, Daniel | Article in Journal | | 2022 |
| On His Majesty's Secret Service: Irish Catholic Clerics and the House of Stuart | Ó Ciardha, Éamonn | Article in Book | | 2015 |
| On the road to rebellion : the United Irishmen and Hamburg, 1796-1803 | Weber, Paul | Monograph or Collective Volume | Four Courts | 1997 |
| Operation brogue | Feehan, John | Monograph or Collective Volume | Mercier Press | 1984 |
| Operation Lobster 1 - German agents landed near Skibbereen during World War II | Walsh, Kieron | Article in Journal | | 2008 |
| Pawel Edmund Strzelecki Polski badacz Australii | Slabczynski, Waclaw | Monograph or Collective Volume | Nasza Ksiegarnia | 1954 |
| Physical force within the bounds of political constraints : GHQ's role in the War of Independence | Lingard, Katie | Article in Book | | 2015 |
| Prelude to the Easter Rising : Sir Roger Casement in imperial Germany | Doerries, Reinhard R. | Monograph or Collective Volume | Cass | 2000 |
| Prince of spies | Cole, J. A. | Monograph or Collective Volume | Faber | 1984 |
| Problematic killing during the War of Independence and its aftermath : civilian spies and informers | O'Halpin, Eunan | Article in Book | | 2013 |
| Problems in applying counterterrorism to prevent terrorism : two decades of violence in Northern Ireland reconsidered | Soule, John W. | Article in Journal | | 1989 |
| Reflections on writing and editing with reference to national archives (UK), CO 904/1-3 & HO 161/1-5 | McCormack, W. J. | Article in Book | | 2005 |
| Requiem for a spy : the killing of Robert Nairac | Bradley, Anthony | Monograph or Collective Volume | Mercier Press | 1992 |
| Roger Casement : a reassessment of the diaries controversies | Wilson, Mairead | Monograph or Collective Volume | Athol | 2005 |
| Room 40 : British naval intelligence, 1914-18 | Beesley, Patrick | Monograph or Collective Volume | [s.n.] | 1984 |
| Sabotage in the USA! Imperial Germany and Irish-American contacts, 1900-1917 | De Wiel, Jérôme aan | Article in Journal | | 2010 |
| Samuel Turner's information on the United Irishmen, 1797-8 | | Article in Journal | | 2011 |
| Samuel Waters (1846-1936) of Woodview, Stillorgan | MacMahon, Bryan, 1949- | Article in Journal | | 2017 |
| Securing the state with soldier spies: evaluating the risks of using military personnel to gather surveillance evidence in Ireland | Mulqueen, Michael | Article in Journal | | 2009 |
| Security force collusion in Northern Ireland 1969–1999 : substance or symbolism? | Cochrane, Mark | Article in Journal | | 2013 |
| Security policy in Northern Ireland : some reflections on the management of violent conflict | Jeffery, Keith | Article in Journal | | 1990 |
| Shadowboxing in the dark : intelligence and counter-terrorism in Northern Ireland | Finegan, Rory | Article in Journal | | 2016 |
| Sinn Féin and Republican suspects, 1899-1921 : Dublin Castle Special Branch Files (CO 904 (193-216) ) | Anonymous | Monograph or Collective Volume | Eneclann | 2006 |
| Sir Robert Anderson, K.C.B., Ll.D., and Lady Agnes Anderson | Moore-Anderson, A. P. | Monograph or Collective Volume | | 1947 |
| Smuggling Michael Collins into police HQ | Broy, Eamon | Article in Book | | 2016 |
| Sources. Keeping an eye on the usual suspects : Dublin Castle's 'Personalities Files' | McGarry, Fearghal | Article in Journal | | 2006 |
| Soviet military mapping of Ireland during the Cold War: Galway and the western littoral | Travers, Desmond | Article in Journal | | 2008 |
| Spies in Ireland | Davidson, ArthurStephan, Enno | Monograph or Collective Volume | Macdonald | 1963 |
| Spies, informers and the 'Anti - Sinn Féin Society' : the intelligence war in Cork City, 1920-1921 | Borgonovo, John | Monograph or Collective Volume | Irish Academic Press | 2007 |
| Spying on Ireland : British intelligence and Irish neutrality during the Second World War | O'Halpin, Eunan | Monograph or Collective Volume | Oxford University Press | 2008 |
| Stakeknife : Britain's secret agents in Ireland | Harkin, GregIngram, Martin | Monograph or Collective Volume | O'Brien Press | 2004 |
| Stalker : the search for the truth | Taylor, Peter, 1942- | Monograph or Collective Volume | Faber | 1987 |
| Still dark in paranoia Gulch | Campbell, Duncan | Article in Book | | 1996 |
| Strongman and spy. Ernst Weber-Drohl's U-boat landings in Killala Bay, Co. Sligo | Moore, Sam | Article in Journal | | 2016 |
| Suspected informants in Munster | Borgonovo, John | Article in Book | | 2017 |
| Ten-thirty-three : the inside story of Britain's secret killing machine in Northern Ireland | Davies, Nicholas | Monograph or Collective Volume | Mainstream publishing | 1999 |
| The 1972-3 Dublin bombings | Meehan, NiallUrwin, Margaret | Article in Journal | | 2018 |
| The British spy in illinois pharmacy | Lewis, Edward R., Jr. | Article in Journal | | 1972 |
| The British State and the Irish Rebellion of 1916 : an intelligence failure or a failure of response? | Sloan, Geoff | Article in Journal | | 2013 |
| The consuls who helped sink a fleet : Union consuls in Ireland, intelligence and the American Civil War | Whelan, Bernadette | Article in Book | | 2006 |
| The Easter Rising in the context of censorship and propaganda with special reference to Major Ivon Price | Murphy, Brian P. | Article in Book | | 2007 |
| The European Youth campaign in Ireland : neutrality, Americanization and the Cold War, 1950 to 1959 | McKenzie, Brian, A. | Article in Journal | | 2016 |
| The history of Irish Army Intelligence, 1918-1945 | Walsh, Maurice | Thesis | | 2008 |
| The history thieves : secrets, lies and the shaping of a modern nation | Cobain, Ian | Monograph or Collective Volume | Portobello | 2016 |
| The hound of Ulster and the re-writing of Irish history | McAuley, James WhiteMcCormack, Joe | Article in Journal | | 1990 |
| The informers : a chilling account of the supergrasses in Northern Ireland | Boyd, Andrew, 1921- | Monograph or Collective Volume | Mercier Press | 1984 |
| The IRA and the shadow of the informer : punishment, governance, and dealing with the past | Dudai, Ron | Thesis | | |
| The IRA, intelligence and Bloody Sunday, 1920 | Dolan, Anne | Article in Book | | 2006 |
| The Irish Army and state security policy, 1956-1974 | Longwill, Edward | Thesis | | 2009 |
| The Irish Free State and collective security 1930-6 | Kavanagh, Martha | Article in Journal | | 2004 |
| The Irish interlude : German intelligence in Ireland, 1939-1943 | Hull, Mark M. | Article in Journal | | 2002 |
| The Irish volunteers' intelligence organisation | Kavanagh, Séan, 1897-1984 | Article in Journal | | 1969 |
| The life and opinions of Leonard MacNally (1752-1820) : playwright, barrister, United Irishman, and informer | Bartlett, Thomas | Article in Book | | 2001 |
| The life and opinions of Leonard MacNally (1752-1820), playwright, barrister, United Irishman and informer | Bartlett, Tom | Article in Book | | 2007 |
| The local defence force and the local security force in the parish | Keenehan, John | Article in Book | | 2006 |
| The local security forces in Westport 1940-1945 | Keane, Vincent | Article in Journal | | 2008 |
| The Myth of Ulsterization in British Security Policy in Northern Ireland | Neumann, Peter R. | Article in Journal | | 2003 |
| The riddle of the two Casements? | Mitchell, Angus | Article in Book | | 2005 |
| The Role and Effectiveness of Intelligence in Northern Ireland | Bamford, Bradley W. C. | Article in Journal | | 2005 |
| The RUC Special Branch : how effective was it at defeating an insurgency? | Matchett, William | Thesis | | |
| The scab incarnate? A critical reassessment of Pinkerton James McParlan | Torve, Constantin | Article in Journal | | 2022 |
| The security forces | Jeffery, Keith | Article in Journal | | 1990 |
| The shamrock and the swastika : German espionage in Ireland in world war II | Carter, Carrolle J. | Monograph or Collective Volume | Pacific Press | 1977 |
| The sinews of empire : Ireland, India and the construction of British colonial knowledge | Ballantyne, Tony, 1972- | Article in Book | | 2005 |
| The so-called 'Cairo' and 'Igoe' Gangs | Bourke, Edward | Article in Journal | | 2022 |
| The Soviet spy who lived in Wicklow | O'Cleirigh, Noel | Article in Journal | | 2007 |
| The spies at Gilnahirk | Busby, George | Monograph or Collective Volume | Ballyhay Books | 2016 |
| The spy in the Castle | Neligan, David | Monograph or Collective Volume | Macgibbon & Kee | 1968 |
| The squad and the intelligence operations of Michael Collins | Dwyer, T. Ryle | Monograph or Collective Volume | Mercier Press | 2005 |
| The strange story of Richard Ferris | Purcell, Mary | Article in Book | | 1978 |
| The sunken gold : First World War espionage and the greatest treasure salvage in history | Williams, Joseph A. | Monograph | History Press | 2018 |
| The use of undercover military units in counter-terrorist operations : a historical analysis with reference to contemporary anti-terrorism | Hughes, Geraint | Article in Journal | | 2010 |
| The Vatican pimpernel : the wartime exploits of Monsignor Hugh O'Flaherty | Fleming, Brian | Monograph or Collective Volume | Collins Press | 2008 |
| The ‘unforgivable’? : Irish Republican Army (IRA) informers and dealing with Northern Ireland conflict legacy, 1969-2021 | Leah Williams, Eleanor ; Leahy, Thomas | Article in Journal | | 2023 |
| The “informer” and the political and organisational culture of the Irish republican movement : old and new interpretations | Hopkins, Stephen | Article in Journal | | 2017 |
| The “informer” and the political and organisational culture of the Irish republican movement : old and new interpretations | Hopkins, Stephen | Article in Journal | | 2017 |
| Thirty pieces of silver : informers of twentieth-century Ireland | Duffy, Angela | Thesis | | |
| Thomas Fitzgerald, the Irish National Association of Queensland and Australian national security, 1916-1921 | Ainsworth, John | Article in Journal | | 2005 |
| Thomas Hussey y sus servicios a la política de Floridablanca | Voltes Bou, Pedro | Article in Journal | | 1959 |
| Three failures and a success : Dublin Castle's intelligence assessed, 1796-1803 | Bartlett, Thomas | Article in Book | | 2006 |
| Towards an acceptable level of violence : institutional lessons from Northern Ireland | Brownlow, Graham | Article in Journal | | 2012 |
| Turning points of the Irish Revolution : the British government, intelligence, and the cost of indifference, 1912-1921 | Grob-Fitzgibbon, Benjamin John | Monograph or Collective Volume | Palgrave Macmillan | 2007 |
| Twenty-five years in the secret service : the recollections of a spy | Beach, Thomas Billis, 1841-1894 | Monograph or Collective Volume | | 1892 |
| Under surveillance | Scannell, James | Article in Journal | | 1991 |
| Undercover cop : one man's true story of undercover policing in Ireland, the UK and Europe | Craig, Patrick | Monograph or Collective Volume | Gill & Macmillan | 2008 |
| Unfinished business : state killings and the quest for truth | Gilmartin, MaireadRolston, Bill | Monograph or Collective Volume | Beyond the Pale | 2000 |
| Was John Keogh an informer? | Finegan, Francis | Article in Journal | | 1950 |
| Was John Keogh an informer? A reply to Father Finegan's article | Landreth, Helen | Article in Journal | | 1950 |
| Werner Unland : the Abwehr's man in Dublin | Hull, Mark M. | Article in Journal | | 1999 |
| Who framed Colin Wallace? | Foot, Paul | Monograph or Collective Volume | Macmillan | 1989 |
| Wicklow shipwrecks, smugglers and spies: a new light on old records | Hannigan, Ken | Article in Journal | | 2014 |
| William Fullarton's expenses (1689-92) about the war in Ireland | Truckell, A. E. | Article in Journal | | 2002 |
| William Melville -spymaster. An exhibition at Kerry County Museum | O'Carroll, Helen | Article in Journal | | 2008 |
| William Wickham, the Christ Church Connection and the Rise and Fall of the Security Service in Britain, 1793-1801 | Durey, Michael | Article in Journal | | 2006 |
| Wine, genealogy and cross-dressing | O'Halloran, Seán | Article in Journal | | 2018 |
| Winter's tale : an autobiography | Winter, Ormonde | Monograph or Collective Volume | Richards Press | 1955 |
| ‘Have a go’ : British army/MI5 agent-running operations in Northern Ireland, 1970–72 | Charters, David A. | Article in Journal | | 2013 |