| "A week is a long time in politics" | Healy, Fran | Article in Journal | | 1995 |
| "Philosophick views"? Maria Edgeworth and the Great Famine | Kelleher, Margaret | Article in Journal | | 1997 |
| "That part that laws or kings can cause or cure" : crown prosecution and jury trial at Longford assizes, 1830-45 | McCabe, Desmond | Article in Book | NA | 1991 |
| "The noggin of milk" : an Old Testament legend and the Battle of Ballinamuck | Murphy, Maureen | Article in Book | Four Courts Press | 1998 |
| "The Tide Had Definitely Turned": The Irish Party, Sinn Féin, and the election campaigns in Longford, 1917-18 | Farrell, Mel | Article in Journal | | 2017 |
| "To the four winds : famine times in north Longford | Mimnagh, JohnMimnagh, Seamus | Monograph or Collective Volume | The authors | 1997 |
| 'A mere Irish man, but a good protestant': Sir Francis Shane, 1540-1614 | Mannion, Joseph | Article in Journal | | 2017 |
| 'Come, pack up your store ...' : emigration from County Longford in the nineteenth and twentieth centuries | O'Hara, Aidan | Article in Book | Geography Publications | 2010 |
| 'Members of the republick of letters': Maria Edgeworth, literary sociability and intellectual pursuits in the Irish midlands | Prendergast, Amy | Article in Journal | | 2016 |
| 'Remember your soul and your liberty' - the 1836 Longford by-election | Collins, Stephen | Article in Journal | | 2024 |
| 1917 in Ireland - three by-elections of 1917 | Snoddy, Oliver | Article in Journal | | 1967 |
| 4 motor squadron | McCorley, Roger | Article in Journal | | 2011 |
| A 'cadre-style' party? Cumann na nGaedheal organization in Clare, Dublin North, and Longford-Westmeath, 1923-27 | Farrell, Mel | Article in Journal | | 2012 |
| A bibliography of County Longford based on the collection of books and journals in the local studies department of Longford County Library | | Article in Book | | 2010 |
| A biographical and bibliographical dictionary of Longford authors | Ó Suilleabháin, Seán | Monograph or Collective Volume | Westmeath Joint Library Committee | 1978 |
| A brave soldier of Kenagh | Egan, Paddy | Article in Journal | | 2006 |
| A breath of fresh air in Longford | Corlett, Christiaan | Article in Journal | | 2001 |
| A gentleman's estate should be a moral school : Edgeworthstown in fact and fiction, 1760-1840 | Dunne, Tom, 1939- | Article in Book | | 1991 |
| A hoard of 17th century European silver coins from Newcastle, Co. Longford | Kenny, Michael | Article in Journal | | 1983 |
| A house divided | MacNerney, James P. | Article in Journal | | 2006 |
| A legacy in stone | Lennon, James | Article in Journal | | 2006 |
| A magistrate remembered in verse and folklore: Captain Charles Ferguson (d.1842) of Corsica, Ballinamuck, and Ballyshannon | Ferguson, Kenneth | Article in Journal | | 2020 |
| A much-storied shield | Molloy, Barry | Article in Journal | | 2020 |
| A pastoral vision : Canon Joseph Guinan and the clerical social project in Edwardian Ireland | Maume, Patrick | Article in Journal | | 2005 |
| A question of survival : the O'Farrells and Longford in the seventeenth century | Gillespie, Raymond | Article in Book | | 1991 |
| A time and a time and a half time : a view from the moat of Granard : the old woman of the roads meets Maria Edgeworth in '98 | Devaney, Owen | Article in Book | | 1998 |
| A town called Saint Patrick | MacNerney, James P. | Article in Journal | | 2006 |
| Abbeylara : the tragic shooting of John Carthy | Hennelly, Regina | Monograph or Collective Volume | O'Brien Press | 2007 |
| Abbeyshrule, Co. Longford | Langan, Tom | Article in Journal | | 1942 |
| Alan Turing : the genius who changed the world | Illingworth, Ruth | Article in Journal | | 2013 |
| Albert Reynolds : the Longford leader : the unauthorised biography | Ryan, Tim | Monograph or Collective Volume | Blackwater | 1994 |
| American Civil War chaplain | O'Hara, Aidan | Article in Journal | | 2006 |
| An Chéad Oireachtas - Gránard, 1782 | Piatt, Donn S. | Article in Journal | | 1951 |
| An early medieval horn from the River Erne | Waterman, D. M. | Article in Journal | | 1969 |
| An Ghaeilge i gcontae an Chabháin i gcontae Longphuirt agusi gcontae na hIarmhi san bhlain 1823 | Ó Mórdha, Séamus | Article in Journal | | 1962 |
| An Ghaeilge i gContae Longfort | Ó Suilleabháin, Seán | Article in Journal | | 2007 |
| An introduction to the architectural heritage of County Longford | National Inventory of Architectural Heritage | Monograph or Collective Volume | National Inventory of Architectural Heritage | 2010 |
| An IRA action at Fihoragh, 1921 | MacNerney, James | Article in Journal | | 2006 |
| An Irish village in an English Atlantic World: Clohamon and the Lords Baltimore | Lyttleton, James | Article in Journal | | 2022 |
| An logainm Ardach | Ó Cearbhaill, Pádraig | Article in Journal | | 2018 |
| Anglo-Irish antiquarianism in Longford in the 1780s : the case of Charlotte Brooke | Ní Mhunghaile, Lesa | Article in Book | | 2010 |
| Anglo-Norman settlement in Co. Longford | O'Conor, Kieran,Parker, Ciaran | Article in Book | | 2010 |
| Ardagh House. Billof measurements of works excecuted at Ardagh in 1861 for the Dowager Lady Featherston by Wm Thomas H. Carroll, builder. J.Rawson Carroll Esq., architect | | Article in Journal | | 2008 |
| Arthur Kingstone's household staff | English, Norman William | Article in Journal | | 1972 |
| Aspects of Anglo-Norman secular settlement in Longford and Roscommon c. 1300 | Doran, Linda | Article in Journal | | 2005 |
| Athlone, Longford and Mullingar | O'Ferrall, Fergus | Article in Book | | 2013 |
| Aughakine - the decimation of a townland over the past fifty years | Ó Suilleabháin, Seán | Article in Journal | | 2007 |
| Ballinamuck and '98. A talk to the Society | Ó Duigneáin, P. | Article in Journal | | 1969 |
| Ballinamuck in song and story | Devaney, Owen | Article in Book | | 1998 |
| Ballinamuck revisited. The dynamics of oral tradition | Murphy, Maureen | Article in Journal | | 2012 |
| Ballycloghan remembered 1957-1966 | Hunt, Joe | Article in Journal | | 2007 |
| Barracks closures | Nagle, David | Article in Journal | | 2009 |
| Barry | O'Hanlon, Ciaran | Article in Journal | | 2007 |
| Bernard Sheridan - a man of steel | Mulligan, William, 1877-1968 | Article in Journal | | 2006 |
| Bishop Hoare and politics | Mulryan, Maureen | Article in Journal | | 2007 |
| Bishop William O'Higgins finally honoured | Editor | Article in Journal | | 2007 |
| Board of Guardians Granard Workhouse. Raw deal for the Master | Tierney, Philip | Article in Journal | | 2006 |
| Brianstown House | McHugh, Doreen | Article in Journal | | 2013 |
| Bunlahy fair play | Donohoe, Anne | Article in Journal | | 2006 |
| Business records survey in Co. Longford | Parkhill, Trevor | Article in Journal | | 1974 |
| Canal and rail transport in Longford | Illingworth, Ruth | Article in Journal | | 2006 |
| Canal memories | McGoey, Cathal | Article in Journal | | 2007 |
| Castle Nugent and Castle Rackrent : fact and fiction in Maria Edgeworth | Maguire, W. A. (William Alexander) | Article in Journal | | 1996 |
| Changes in women's lives since 1960 | Donohoe, Ann | Article in Book | | 2007 |
| Charleyhorse rider : tales of the winding Erne | McElgunn, Seán | Monograph or Collective Volume | Seán McElgunn | 1997 |
| Charlotte Brooke (1740-1793) | [MacNerney, James P.] | Article in Journal | | 2006 |
| Chicago May : queen of the blackmailers | Columb, Frank | Monograph or Collective Volume | Evod Academic Publishing company | 1999 |
| Children's shepherd : the story of John Christopher, Drumgoole | Burton, Katherine | Monograph or Collective Volume | Clonmore & Reynolds | 1956 |
| Childrens literature from County Longford 1760-1960 | O'Brien, Gearoid | Article in Journal | | 1980 |
| Clawinch Island: A memoir | Norton, Tom | Article in Journal | | 1998 |
| Clonbalt House | McGee, Tom | Article in Journal | | 2013 |
| Clonbroney with Ballinalee; a local history | | Monograph or Collective Volume | Ballinalee Guild, Irish Countrywomen's Association | 1997 |
| Clonfin eighty-fifth anniversary | | Article in Journal | | 2006 |
| Col. Francis Barber, a soldier of the revolution | O'Neill, James L. | Article in Journal | | 1907 |
| Colonel Jeremiah J. 'Ginger' O'Connell - A Soldier's Life | Hodson, Tom | Article in Journal | | 2020 |
| Commemorating Richard Lovell Edgeworth | Morris, Martin | Article in Journal | | 2008 |
| Convent of Mercy, 1861-2011, Longford [an illustrated history] | | Monograph or Collective Volume | St Joseph's Convent of Mercy | 2011 |
| Convent of Mercy, Longford : answering the call | Gilmurray, Immaculata | Article in Journal | | 2011 |
| Cosy homesteads in the idyllic rural landscape | O'Hara, Aidan | Article in Journal | | 2008 |
| Country life in mid-twentieth century Longford | McNamee, John J. | Article in Journal | | 2013 |
| County Longford and its people : an index to the 1901 census for county Longford | Leahy, David | Monograph or Collective Volume | Flyleaf | 1990 |
| County Longford and the Connaught Tories, 1660-70 | Kelly, Francis | Article in Journal | | 1971 |
| County Longford and the Irish revolution, 1910-1923 | Coleman, Marie | Monograph or Collective Volume | Irish Academic Press | 2003 |
| County Longford and World War I | Leahy, David | Article in Book | | 2010 |
| County Longford explored : Irish history in the hidden heartland | O'Ferrall, Fergus | Monograph or Collective Volume | Geography Publications | 2025 |
| County Longford eyewitness accounts of World War I | Leahy, David | Article in Journal | | 2008 |
| County Longford history, 1967-1997 | O'Ferrall, Fergus | Article in Journal | | 1997 |
| County Longford residents prior to the famine : a transcription and complete index of the applotment books of county Longford, Ireland (1823-1835) | Rymsza, Guy A. | Monograph or Collective Volume | Dome Shadow Press | 2004 |
| County Longford sport and society, 1850-1905 | Hunt, Tom | Article in Book | | 2010 |
| County Longford survivors of the great famine : a complete index to Griffith's primary valuation of Co. Longford (1854) | Leahy, David | Monograph or Collective Volume | Derryvrin | 1996 |
| County management in Longford, 1978-2005 | Killeen, Michael | Article in Book | | 2010 |
| Death customs in rural Ireland : traditional funerary rites in the Irish midlands | Ridge, Anne | Monograph or Collective Volume | Arlen House | 2009 |
| Devenir irlandés : narrativas íntimas de la emigración irlandesa a la Argentina (1844-1912) | | Monograph or Collective Volume | EUDEBA | 2004 |
| Discoveries at Lough Kinale, Co. Longford | Sikora, Maeve | Article in Book | | 2025 |
| Discovery programme in Lough Kinale | Fredengren, Christina | Article in Journal | | 2002 |
| Documenting oral history and tradition in a midland county : some Longford collectors and their work | Ní Fhloinn, Bairbre | Article in Book | | 2010 |
| Documents on Longford history | Anonymous | Article in Book | | 1991 |
| Drumming House and estate | Morris, Martin | Article in Journal | | 1997 |
| Eccentric Ireland. Co. Longford | Sharkey, Olive | Article in Journal | | 2010 |
| Education | Doherty, Gen | Article in Book | | 2007 |
| Eileen Murray [1885-1962] | Cassidy, Breege | Article in Journal | | 2008 |
| Elizabeth Carr's Edgeworthstown sketches [1819] | | Article in Journal | | 2008 |
| Emigration | Gearty, Margot | Article in Book | | 2007 |
| Employment | Igoe, Stephanie | Article in Book | | 2007 |
| Ennis and Longford | Ó Dálaigh, Brian | Article in Book | | 2013 |
| Entries from the family Bible of James Hyde of the town of Longford | Hyde, James | Article in Journal | | 1970 |
| Esker Hall | Caherly, Kathleen | Article in Journal | | 2006 |
| Estates and large farms in County Longford, 1841-1911 | Nolan, William | Article in Book | | 2010 |
| Excavation of the portal tomb site at Melkagh Co. Longford | Cooney, Gabriel | Article in Journal | | 1997 |
| Exploring family origins and old Longford town | | Monograph or Collective Volume | Longford Leader | 1990 |
| Exploring the impact of the canals: Limerick, Maynooth, Mullingar and Longford | Horner, Arnold | Article in Book | | 2018 |
| Fairy imposters in county Longford in the Great Famine | Young, Simon | Article in Journal | | 2012 |
| Farming methods - 1930s to 1950s | Murtagh, Tom | Article in Journal | | 2008 |
| Féilte Cláirseoireachta Ghránaird, John Dungan, Cóbanhávan, agus an Rómánsachas Luath | Ó Catháin, Diarmaid | Article in Journal | | 2007 |
| Fiddle music in Longford and South Leitrim since Kiernan | Quinn, John, PP | Article in Journal | | 2008 |
| Fifty years of Longford | Longford News | Monograph or Collective Volume | Longford News | 1986 |
| Fihoragh | MacNerney, James P. | Article in Journal | | 2008 |
| Fireside tales from around Longford town and county : a collection of stories from tape recordings [Volumes 1 - 7] | | Monograph or Collective Volume | Grafton Court Books | 2003-2009 |
| Fishing weirs on the river Erne | Went, A. E. J. | Article in Journal | | 1946 |
| Folk memories of Black '47 | MacNerney, James | Article in Journal | | 2007 |
| Forsaking nationalists for republicans: watershed elections in the Midlands, 1917-1920 | Burke, John | Article in Journal | | 2013 |
| Foxhall | Doherty, HayleyMannion, Sarah | Article in Journal | | 2008 |
| Fr John F. Greene (1904-1973 PP Clonbroney | MacNerney, James P. | Article in Journal | | 2007 |
| Fragments of the civil survey of counties Kerry, Longford and Armagh | | Article in Journal | | 1967 |
| Francis Hutcheson (1694-1746) and the Longford connection | O'Hara, Aidan | Article in Journal | | 2013 |
| Francis Ysidro Edgeworth, 1845-1926 | Desmond, Anthony F. | Article in Book | | 2000 |
| From Ballinalee to Botany Bay. Clonbroney's links with Colonial Australia | Brady, Gerry | Article in Journal | | 2006 |
| From ethics to economics: F.Y.Edgeworth, 1845-1926 | Conniffe, Denis | Article in Journal | | 2010 |
| From MacEoin to Reynolds : County Longford politics, 1960-2000 | Collins, Stephen | Article in Book | | 2010 |
| From page and stone : ancestral records of Moylow, Co. Longford | Baxter, Luke | Monograph or Collective Volume | Moylow Cemetries Committee in Association with the Longford Historical Society | 1999 |
| From the ashes | Bowe, Nicola GordonHalpin, Andrew | Article in Journal | | 2014 |
| From the well of St Patrick : Dromard parish, Co, Longford | MacNerney, James P. | Monograph or Collective Volume | St Mel's Diocesan Trust | 2000 |
| Gaelic towns? Tuam, Longford, Sligo and Ennis | Gearty, Sarah | Article in Book | | 2018 |
| General James Joseph MacDonnell (1763-1848) : The Roscommon connection | Molloy, Sheila | Article in Journal | | 1996 |
| General Sir Richard O'Connor - first significant British military victory in WWII | McGrath, Con | Article in Journal | | 2013 |
| Glennon Borthers : céad bliain ag fás : one hundred years a growing, 1913-2013 | Glennon, Denis | Monograph or Collective Volume | Glennon Bros Holdings | 2013 |
| Grain milling in county Longford | Mimnagh, Seamus | Article in Book | | 2010 |
| Grain mills of County Longford c.1750 - c.1950s : a regional survey | Mimnagh, James P. | Thesis | | 2010 |
| Granard | Kearney, Patrick | Article in Journal | | 1969 |
| Granard : its history, our heritage | | Monograph or Collective Volume | Granard Guild, Irish Countrywomen's Association | 1987 |
| Great Hatred. The assassination of Field Marshal Air Henry Wilson MP, [by] Ronan McGreevy. London, 2022 | Regan, John M. | Article in Journal | | 2022 |
| Ground plan of Longford Gaol (circa 1868) | | Article in Journal | | 2008 |
| Growing up on the shores of Lough Ree | Glennon, Kathleen | Article in Journal | | 2008 |
| Haidee's diary. A glimpse at daily life in the Big House 1889 as seen through the eyes of Haidee Dopping-Heppenstal, Derrycassan | MacNerney, James P. | Article in Journal | | 2006 |
| Headstone inscription in St John's Churchyard | | Article in Journal | | 2006 |
| Historic passions : the Edgeworths and Edgeworthstown : a rediscovered heritage | Canavan, Bernard | Article in Journal | | 1997 |
| Historical notes and stories of the county Longford | Farrell, J. P. | Monograph or Collective Volume | Longford Leader | 1979 |
| History of county Longford | Farrell, J. P. | Monograph or Collective Volume | Longford Leader | 1980 |
| History of Killoe | Caherly, Shauna | Article in Journal | | 2008 |
| History of Longford ancient and modern | Ó Finn, Michael | Article in Journal | | 1969 |
| History of the county Longford | Farrell, J. P. | Monograph or Collective Volume | Longford Printing and Publishing | 1981 |
| Hockey in Longford | McNally, Patsy | Article in Journal | | 2011 |
| Hon. Edward Blake and the 1892 election | Brady, Gerard | Article in Journal | | 1997 |
| Impact of the famine : Dundrum and Drumlish | McKeon, Regina | Article in Journal | | 1997 |
| Interesting data from our troubled past | Leahy, David | Article in Journal | | 2013 |
| Ireland and Irishness in the political thought of Bronterre O'Brien | Turner, Michael J. | Article in Journal | | 2014 |
| Irish family history : Co. Longford 18th and 19th century wills, etc. | Reynolds, Henry | Article in Journal | | 1944 |
| Island living : the modern story of life on the Black Islands on Lough Ree | O'Brien, Gearoid | Article in Journal | | 2013 |
| Island names of Lough Ree and their chronology | Finnegan, Aengus | Article in Journal | | 2013 |
| Jamie Kelly : a famous son of Longford | Winther, Nora Hayes | Article in Journal | | 2013 |
| John Daniel, Thomas Conolly and the Erne Fisheries, 1796-1799 | Hayes, Frank | Article in Journal | | 1994 |
| John O'Donovan of the Ordnance Survey at the Moat of Granard May 1837 | Herity, Michael | Article in Journal | | 2008 |
| Keeping Longford connections : the County Longford colony in New York - Part II | Ridge, John T. | Article in Journal | | 2004 |
| Killashee, Co. Longford | Ó Connalláin, M. | Article in Journal | | 1946 |
| Killoe : history of a county Longford parish | Devaney, Owen | Monograph or Collective Volume | Diocese of Ardagh and Clonmacnoise | 1981 |
| Land, politics and religion in Longford since 1600 | Gillespie, RaymondMoran, Gerard | Article in Book | | 1991 |
| Lawless Longford, 1800-1845 | Wallace, Peter | Article in Journal | | 2011 |
| Letters between Westmeath and the Falkland Islands | Walsh, Edward | Article in Journal | | 2015 |
| Longford | Coleman, Marie | Article in Book | | 2017 |
| Longford | Gearty, SarahMorris, MartinO'Ferrall, Fergus | Monograph or Collective Volume | Royal Irish Academy | 2010 |
| Longford : essays in county history | | Monograph or Collective Volume | Lilliput Press | 1991 |
| Longford authors | Ó Suilleabháin, Seán | Monograph or Collective Volume | [s.n.] | 1978 |
| Longford brigade, Ballinalee, three weeks in Novermber, 1920 | Mac Eoin, Seán | Article in Journal | | 1970 |
| Longford county surveyors and engineers | Timlin, Roger | Article in Journal | | 2013 |
| Longford gas works | | Article in Journal | | 2006 |
| Longford history and society : interdisciplinary essays on the history of an Irish county | | Monograph or Collective Volume | Geography Publications | 2010 |
| Longford medicine in early NZ goldfields | Murtagh, R.W. | Article in Journal | | 2007 |
| Longford men in the American Civil War (1861-'65) part I : the chaplains | O'Hara, Aidan | Article in Journal | | 2011 |
| Longford men ni the American Civil War (1861-'65) part II : the all but forgotten men - the soldiers | O'Hara, Aidan | Article in Journal | | 2011 |
| Longford Musketeers : the Farrells of Annaly and the sieges of St. Ghislain and Tangier | Collins, Stephen | Article in Journal | | 2003 |
| Longford priories and their manuscripts : All Saints and Abbeyderg | Ó Riain, Pádraig | Article in Book | | 2010 |
| Longford Wild Geese in the Invalides | Ó hAnnracháin, Eoghan | Article in Journal | | 2007 |
| Longford women's voices : a social history of women in Co. Longford in the twentieth century | Burns, JoyDonohoe, Ann | Monograph or Collective Volume | County Longford Federation , Irish Countrywomen's Association | 2007 |
| Longford's archives | Morris, Martin | Article in Book | | 2010 |
| Lord Granard marries Beatrice Mills | MacNerney, James | Article in Journal | | 2008 |
| Lost railways of Dundalk and the North East | Johnson, Stephen | Monograph or Collective Volume | Stenlake | 2006 |
| Lough Ree and its islands | Cahill, SeanCasey, JimmyO'Brien, Gearoid | Monograph or Collective Volume | Three Counties Press | 2006 |
| Louvain - some Longford connections | Morris, Martin | Article in Journal | | 2007 |
| Mapping County Longford, c.1720-1800 : the estate surveys of John Brownrigg and others | Gearty, Sarah | Article in Book | | 2010 |
| Maps of county Longford, 1790-1840 | Gearty, Sarah | Article in Journal | | 1997 |
| Maria Edgeworth : scientific 'literary lady' | Brück, Mary Teresa | Article in Journal | | 1996 |
| Marriage and motherhood | Burns, Joy | Article in Book | | 2007 |
| Mary Todd Lincoln's Longford roots : Toddstown? | O'Hara, Aidan | Article in Journal | | 2013 |
| McCann's Mills of Tenelick | McGoey, Cathal | Article in Journal | | 2008 |
| Medieval communication routes through Longford and Roscommon and their associated settlements | Doran, Linda | Article in Journal | | 2004 |
| Medieval settlement in counties Longford and Roscommon | Doran, Linda | Thesis | | 2002 |
| Megalithic tombs near Athlone. Past, present and spurious | English, Norman William | Article in Journal | | 1969 |
| Melview National School. 1856-1966 | McNally, Patricia | Article in Journal | | 2006 |
| Memories of Ballinamuck as told to and recorded by John F. Lenehan | Lenehan, John F. | Article in Journal | | 1969 |
| Memories of Mount Carmel Hospital, Longford | McNally, Patsy | Article in Journal | | 2007 |
| Memories of the Turlough | Fallon, James | Monograph or Collective Volume | The author | 2005 |
| Methodism in Co. Longford since 1750 | MacCormaic, Eamonn | Monograph or Collective Volume | An Cuilin | 1995 |
| Michael Collins - the Granard connection | Gearty, Margot | Article in Book | | 1998 |
| Michael Collins's Jail Journal, 2-21 April 1918 | Brady, Phelim | Article in Journal | | 2018 |
| Michael Farrell, United Irishman from Ballymahon | Casey, James | Article in Journal | | 1983 |
| Minutes of Longford poor law guardians during the great famine | Devaney, Owen | Article in Journal | | 1978 |
| Miscellanea : four previously unpublished beehive querns from County Longford | Corlett, Christiaan | Article in Journal | | 1998 |
| Miscellanea : two previously unpublished cross-slabs from Taghshinny, county Longford | Corlett, Christiaan | Article in Journal | | 1998 |
| Miscellanea. 1. Remembering a child at Grangefertagh | Corlett, Christiaan | Article in Journal | | 2022 |
| Miscellanea. 2. Manuscript relics of an Ossory priest | Ó Macháin, Pádraig | Article in Journal | | 2022 |
| Miscellanea. 3. Placenames in the spoken Irish of Kilkenny | Ó Drisceoil, Proinsias | Article in Journal | | 2022 |
| Mobilisation : the South-Longford by-election and its impact on political mobilisation | Coleman, Marie | Article in Book | | 2002 |
| Mountdillon : its early years | | Monograph or Collective Volume | Bord na Móna | 1996 |
| Mullinalaghta : some historical notes | Boylan, E. | Article in Journal | | 1974 |
| My ancestors from county Longford | Sprague, Arthur William, Jr | Article in Journal | | 2007 |
| My brother John : a sister's story | Carthy, Marie | Monograph or Collective Volume | Hachette Books Ireland | 2007 |
| My county Longford | Sheridan, Kathy | Article in Book | | 2010 |
| New Castle : a childhood memory | Thwaites, Eleanor | Monograph or Collective Volume | Wessex Press | 2006 |
| No news is bad news - death of a newspaper | Lyons, Thomas | Article in Journal | | 2011 |
| North Leinster : the counties of Longford, Louth, Meath and Westmeath | Casey, ChristineRowan, Alistair | Monograph or Collective Volume | Penguin | 1993 |
| North Longford words and phrases | Ó Súilleabháin, Seán | Article in Journal | | 2008 |
| Notable figures with Longford family ties | O'Hara, Aidan | Article in Journal | | 2007 |
| Notes on Mosstown House, Kenagh Its sieges, the Newcomens, Kingstons and a tombstone in Bath, England | English, Norman William | Article in Journal | | 1969 |
| Notes on the Richardsons of Richmount and Richfort | De Montfort, Simon L. M. | Article in Journal | | 1978 |
| Notes on the volunteers, militia, yeomanry and Orangemen of county Longford | Ó Snodaigh, Pádraig | Article in Journal | | 1983 |
| Old mills of Ireland, Vol. 3 : a listing of the old mills of Ireland taken from mid-19th century Valuation Office documents | | Monograph or Collective Volume | William E. Hogg | 2012 |
| Oliver Goldsmith's Deserted Village (1770) and retrospective localism | McCormack, W. J. | Article in Book | | 2010 |
| Ordnance survey letters Londonderry, Fermanagh, Armagh-Monaghan, Louth, Cavan-Leitrim; letters relating to the antiquities of the counties of Londonderry, Fermanagh, Armagh-Monaghan, Louth, Cavan-Leitrim, containing information collected during the progress of the Ordnance Survey in 1834-1836 | | Monograph or Collective Volume | Fourmasters | 2012 |
| Ordnance survey letters Longford and Westmeath; letters relating to the antiquities of the counties of Longford and Westmeath, containing information collected during the progress of the Ordnance Survey in 1837 | | Monograph or Collective Volume | Fourmasters | 2011 |
| Our Society's progress, from 'Teathbha' I,1 (1968) to III,3 (2008) | MacNerney, James | Article in Journal | | 2008 |
| Outrage reports | Fitzsimons, Fiona | Article in Journal | | 2022 |
| Packie Dolan, 1904-1932. Fiddle player extraordinaire | Bradshaw, Harry | Article in Journal | | 2006 |
| Padraic Colum : chairman's address on the occasion of the unveiling of a plaque to Padraic Colum, 23rd October 1997 | Bennett, James | Article in Journal | | 1997 |
| Pádraig Mac Gréine - Master Greene | Ní Fhloinn, Bairbre | Article in Journal | | 2007 |
| Party time : growing up in politics | Fallon, Johnny | Monograph or Collective Volume | Mercier Press | 2006 |
| Pathways to power: A history of Lanesborough Power Station | Fallon, J. J.Fallon, PatsyLoughlin, JohnWhitty, Brendan | Monograph or Collective Volume | Lilliput Press | 2018 |
| People and places | Rehill, Pádraig | Article in Book | | 1998 |
| Place-names of County Longford : collected from various sources. Correctly spelled in Irish and fully explained in English. With notes and illustrations | MacGivney, Joseph | Monograph or Collective Volume | JamesDuffy and Co. Ltd. | 1908 |
| Politics and electioneering in County Longford, 1868-80 | Moran, Gerard | Article in Book | | 1991 |
| Pre-1836 Irish police forces, and a Longford police unit, 1845-1846 | A Chief Superintendent | Article in Journal | | 1946 |
| Primary schools Co. Longford 1800-2000 | | Monograph or Collective Volume | Grafton Court Books | 2011 |
| Primary schools in county Longford | Cahill, SeanCarthy, JohnCasey, James | Monograph or Collective Volume | The authors | 2000 |
| Protestant depopulation in County Longford during the Irish Revolution, 1911–1926 | Coleman, Marie | Article in Journal | | 2019 |
| Rath Reagh church | Craig, Maurice JamesO'Connell, John | Article in Book | | 1980 |
| Rathcline : pathways to the past | | Monograph or Collective Volume | Rathcline Heritage Society | 1995 |
| Rathcline castle, an archaeology of plantation in Co. Longford | Lyttleton, James | Article in Book | | 2010 |
| Reconstructing the river Erne horn | Purser, John | Article in Journal | | 2002 |
| Reflections on Oliver Goldsmith and politics - then and now | O'Ferrall, Fergus | Article in Journal | | 2011 |
| Religion | Donohoe, Ann | Article in Book | | 2007 |
| Remains of a second pre-romanesque church at Inchcleraun on Lough Ree | Manning, Conleth | Article in Journal | | 2012 |
| Repressing the rebellion in county Longford | Bartlett, Thomas | Article in Book | | 1998 |
| Rev. George Brittaine (1788-1848) Rector of Kilcommock and novelist | O'Ferrall, Fergus | Article in Journal | | 2007 |
| Rev. John Wesley in County Longford | MacCormaic, Eamonn | Article in Journal | | 2007 |
| Rev. John Wesley, A.M. and Methodism in Co. Longford | Mac Cormaic, Eamonn | Article in Journal | | 1971 |
| Richard Edgeworth's account books | Morris, Martin | Article in Journal | | 2022 |
| Rising out : Seán Connolly of Longford (1890-1921) | O'Malley, Ernie (Ernest Bernard), 1897-1957 | Monograph or Collective Volume | University College Dublin Press | 2007 |
| Roads and rivers : communication routes in medieval County Longford | Doran, Linda | Article in Book | | 2010 |
| S. F. Ó Ciaráin, M.B. : a scríbhinní i mbunáit na leabharlainne | Mac Carthaigh, Seán | Article in Journal | | 1969 |
| Scoil naisiúnta na Géige : a short history and memories | | Monograph or Collective Volume | # | 1998 |
| Seán Connolly barracks, Longford | O'Dwyer, Joseph | Article in Journal | | 1976 |
| Sean Connolly Barracks, Longford, c.1774-2009 | O'Dwyer, Joseph | Article in Journal | | 2011 |
| Seán MacEoin (1893-1973) : soldier and statesman | Morris, Martin | Article in Journal | | 2013 |
| Serving two masters: some perspectives from a shared archivist | Morris, Martin | Article in Journal | | 2011 |
| Seventy-five years of Longford : the Longford Leader, 1897-1972 | Cobbe, Derek | Monograph or Collective Volume | Longford Leader | 1972 |
| Sexual citizenship : rhetoric or reality for rural gay men in Ireland and England? | McKearney, Aidan | Article in Journal | | 2021 |
| Sir Henry Wilson 1864-1922. Soldier, politician, Irishman | Cook, David S. | Article in Journal | | 2016 |
| Sliabh Chairbre (Carn Hall) | Bennett, J. | Article in Journal | | 1969 |
| Soggarth aroon | Carthy, John | Article in Book | | 1998 |
| Some aspects of landlord and tenant relations in a Longford townland | Morgan, Gerard | Article in Journal | | 1997 |
| Some forgotten Longford exiles | Corkery, John | Article in Journal | | 1974 |
| Some monumental inscriptions from Street, Co. Westmeath | Ffolliott, Rosemary | Article in Journal | | 1969 |
| Some new decorated beehive querns from Connacht and their art | Higgins, Jim | Article in Journal | | 2009 |
| Some notes on the high sheriffs of Co. Longford, 1701-1800 | Gray, Edward Stewart | Article in Journal | | 1945 |
| Some oral traditions from county Longford | Delaney, James | Article in Journal | | 1978 |
| Some thoughts on the history of Ballymahon | O'Hanlon, Ciarán | Article in Journal | | 2013 |
| South County Longford : its farming patterns and customs | MacCormaic, Eamonn | Article in Journal | | 1980 |
| Souvenir programme : 1798 commemoration at Ballinamuck, Co. Longford, September 11th, 1938 | Anonymous | Monograph or Collective Volume | C. E. Dann | 1938 |
| St Johnstown Masonic Hall | Donohoe, Ann | Article in Journal | | 2008 |
| St Mel's cathedral, Longford, 1840. visitor's guide | Clarkson, Sr. AngelaDuffy, Francis, bishopHughes, KittyMcGuinness, SiveMurray, Tom, Rev.O'Reilly, Colm, bishopSalmon, GerryWhite, Alex | Monograph or Collective Volume | [St Mel's Cathedral] | 2016 |
| St. Mel's of Longford : 1865-1990 | McGee, Eugene | Monograph or Collective Volume | St. Mel's Diocesan Trust | 1996 |
| St. Patrick's Church of Ireland, Granard | Stafford, Richard William | Monograph or Collective Volume | Church of Ireland | 1983 |
| Stray fragments of local history | McNamee, James Joseph | Article in Journal | | 1940 |
| Struggle for independence - IRA transportation of ammunition to Longford | Heslin, Michael F. | Article in Journal | | 2006 |
| Suggestions for a programme | Corkery, John | Article in Journal | | 1969 |
| Survey of the raised bogs of county Longford | Moloney, Aonghus | Article in Journal | | 1993 |
| Tea and a ceilidhe in north Longford | McNamee, John J. | Article in Journal | | 2011 |
| Teachainmneacha Chontae an Longfoirt | Mac Aodha, Breandán S. | Article in Journal | | 1983 |
| Tethbae | Walsh, Paul, Revd, 1885-1941 | Article in Journal | | 1940 |
| The 'big wind' of 1839 from a County Longford perspective | Mulligan, Anne | Article in Book | | 2010 |
| The 'massacre' at Longford in 1641 | Mac Gleannáin, Liam | Article in Journal | | 1980 |
| The 'tithe war' in Co. Longford in the 1830s | O'Ferrall, Fergus | Article in Journal | | 2013 |
| The 1641 depositions | Timlin, Roger | Article in Journal | | 2013 |
| The 31st International Eucharistic Congress, 1932 | O'Hara, Aidan | Article in Journal | | 2013 |
| The Abbé Edgeworth Bi-Centenary Commemoration | Morris, Martin | Article in Journal | | 2007 |
| The abbey of Abbeyderg | Higgins, Richard | Article in Journal | | 1971 |
| The Ancient Order of Hibernians in County Longford | Morgan, Gerard | Article in Book | | 2010 |
| The Ballinamuck 'Land war' 1835-39 | O'Ferrall, Fergus | Article in Journal | | 1983 |
| The Blackall line, two branches, one remaining | Goodwillie, John | Article in Journal | | 2017 |
| The blacksmith of Ballinalee : Seán Mac Eoin | O'Farrell, Padraic | Monograph or Collective Volume | Uisneach Press | 1993 |
| The Catholic Church in the Diocese of Ardagh : 1650-1870 | Kelly, James, 1959- | Article in Book | | 1991 |
| The centenary of St. Mel's cathedral 1840-1940 | Masterson, M. J. | Article in Journal | | 1940 |
| The Cistercian abbey at Abbeylaragh, A.D. 1205-1540 | Kearney, Patrick | Article in Journal | | 1969 |
| The Clintons of County Longford | Leahy, David | Article in Journal | | 2006 |
| The Clonfin ambush | Carty, John | Article in Journal | | 1971 |
| The co. Longford colony in New York | Ridge, John T. | Article in Journal | | 2007 |
| The conflict surrounding the drainage of the river Erne, 1881-1890 | Cunningham, John B. 1944- | Article in Journal | | 1992 |
| The consolidation of the O'Connellite democratic revolution : County Longford politics, 1840-1850 | O'Ferrall, Fergus | Article in Book | | 2010 |
| The contribution of Richard Lovell Edgeworth to the reports and maps of the Bogs Commissioners of 1809-14 | Horner, Arnold | Article in Book | | 2010 |
| The County Longford colony in New York - Part I | Ridge, John T. | Article in Journal | | 2003 |
| The death of General Humbert [in New Orleans] | Editor | Article in Journal | | 2008 |
| The Dialann Staire | Anonymous | Article in Journal | | 1969 |
| The downfall of the O'Ferralls of Mornine, c. 1680-c. 1780 | O'Ferrall, Fergus | Article in Book | | 2010 |
| The Drumlish Land War and 'The Irish World' | Murphy, Maureen | Article in Journal | | 2006 |
| The Drunken Man's Freaks | Quinn, John, PP | Article in Journal | | 2008 |
| The early seventeenth-century Ulster and Midland plantations, part 2 : the new architecture | Loeber, Rolf | Article in Book | | 2012 |
| The emergence of the political community in Longford, 1824-1829 | O'Ferrall, Fergus | Article in Book | | 1991 |
| The evolution of technical instruction in county Longford, 1900-1930 | Hughes, Jackie | Article in Book | | 2010 |
| The Fetherston family of Ardagh | Hodgins, John | Article in Journal | | 1980 |
| The first Longford County Council elections under the Local Government (Ireland) Act 1898 | Hughes, Kitty | Article in Journal | | 2013 |
| The forgotten Peterhead men. Longford-Leitrin links with the Border Raids of 1922 | Brady, Gerry | Article in Journal | | 2007 |
| The founding of Longford Historical Society | Flynn, Jude | Article in Journal | | 2007 |
| The Fox family : from Gaelic aristocrats to landed gentry | Shaw, Patricia | Article in Journal | | 2013 |
| The geography of revolution - the case of County Longford, 1917-1921 | Coleman, Marie | Article in Journal | | 2013 |
| The heroes of Ballinamuck | Murphy, Maureen | Article in Book | | 2010 |
| The history of flax and linen in Co. Longford, 1698-1998 | Egan, Paddy | Monograph or Collective Volume | Longford Historical Society | 1998 |
| The history of Granard Convent of Mercy | Foley, Anne M. | Article in Journal | | 2008 |
| The Humbert campaign : from Killala to Ballinamuck | Harte, Colm | Article in Book | | 1998 |
| The Ingenious Mr Edgeworth (1744-1817) | Lyons, Tony | Article in Journal | | 2017 |
| The Irish language and Gaelic literary heritage of County Longford in the eighteenth and nineteenth centuries | Ní Mhunghaile, Lesa | Article in Book | | 2010 |
| The Killeshandra yeomanry, Rosduff and Ballinamuck | Rehill, Pádraig | Article in Book | | 1998 |
| The land war in Drumlish, 1879-82 | Dooley, Terence A. M. | Article in Book | | 2010 |
| The Lefroy family and the emergence of the Tory Party in County Longford, 1828-'31 | O'Ferrall, Fergus | Article in Journal | | 2006 |
| The long retreat : Protestants, economy and society, 1660-1926 | Graham, MarkKennedy, Liam, 1946-Miller, Kerby A. | Article in Book | | 1991 |
| The Longford traditional house | Delaney, James | Article in Journal | | 1974 |
| The lonliness of the long distance runner - Patrick J. Fitzgerald - a forgotten world champion | Baxter, Luke | Article in Journal | | 2006 |
| The Lords Baltimore in Ireland and North America : a study of the Calvert settlements in the Atlantic world | Lyttleton, James | Article in Journal | | 2012 |
| The Lords Baltimore in Ireland and North America: the beginning of an Atlantic world | Lyttleton, James | Article in Journal | | 2013 |
| The lost world of Andrew Johnston : sectarianism, social conflict, and cultural change in southern Ireland during the pre-Famine era | Miller, Kerby A. | Article in Book | | 1998 |
| The manor houses of the 1st Lord Baltimore in an English Atlantic world | Lyttleton, James | Article in Journal | | 2017 |
| The motte-and-bailey castle at Lissardowlan, Co. Longford | De Meulemeester, J.O'Connor, Kieran | Article in Book | | 2007 |
| The moving of a statue | O'Hara, Aidan | Article in Journal | | 2007 |
| The Moyne way - a brief look at the Latin School | MacNerney, James | Article in Journal | | 2008 |
| The NUI Certificate in Local history | Morris, Martin | Article in Journal | | 2006 |
| The Ó Fearghail lordship of Anghaile | Veach, Freya Verstraten | Article in Book | | 2010 |
| The O'Farralls of Mornin castle | Lennon, Jimmy | Monograph or Collective Volume | Farrell Clan Committee | 1997 |
| The Pakenhams - earls of Longford | O'Donnell, M. J. | Article in Journal | | 1969 |
| The Parish of Dromard. An odd place | Creegan, Johnny | Article in Journal | | 2006 |
| The plantation of Longford, 1619-41 | Gallagher, Dermot A. | Thesis | | 1968 |
| The political legacy of World War I and the Easter Rising in Longford | Coleman, Marie | Article in Book | | 2010 |
| The politics of Protestant ascendancy in County Longford, 1630-1840 | Kelly, James, 1959- | Article in Book | | 2010 |
| The Quakers in Lough Ree | Casey, John | Article in Journal | | 2006 |
| The Republican courts in Longford | Coleman, Marie | Article in Journal | | 1996 |
| The rise of the Catholic middle class : O'Connellites in County Longford, 1820-50 | O'Ferrall, Fergus | Article in Book | | 2010 |
| The route of Tain Bó Cúailnge in counties Roscommon and Longford | Gosling, Paul | Monograph or Collective Volume | Archeology Ireland | 2016 |
| The saga of Longford courthouse | MacNerney, James | Article in Journal | | 2007 |
| The shadow on the lake. A memory of "the long frost" of fifty years ago | Lyster, Joseph Lawrence, 1900-1954 | Article in Journal | | 1975 |
| The Sheridans untangled | Schlegel, Donald M. | Article in Journal | | 2016 |
| The shooting of George Hearn | Morris, Martin | Article in Journal | | 2006 |
| The south Longford by-election, May 1917 | Coleman, Marie | Article in Journal | | 1997 |
| The story of Chicago May | Ó Faolain, Nuala | Monograph or Collective Volume | Riverhead Books | 2005 |
| The struggle for Catholic emancipation in county Longford 1824-9 | O'Ferrall, Fergus | Article in Journal | | 1978 |
| The surnames of county Longford | Leary, David | Article in Journal | | 1990 |
| The surnames of county Longford | O'Leary, David | Article in Journal | | 1990 |
| The townland names of County Longford | Murphy, Seán | Monograph or Collective Volume | Murphy, Seán Lettertec | 2022 |
| The Uí Fhearghail and the lordship of Anghaile, c. 1400-1540 | Farrell, Neil | Article in Book | | 2010 |
| The Ulster refuge of the Northern army | Casway, Jerrold | Article in Journal | | 2006 |
| The village master taught his little school : the educational links between north Longford and west Offaly | Ryan, Brendan | Article in Journal | | 2013 |
| The visual worlds of the Edgeworth family : private sketches and literary illustrations | Loeber, MagdaLoeber, Rolf | Article in Journal | | 2014 |
| The War of Independence in the Midlands. A conference organised by the Old Athlone Society to mark the 90th anniversary of the end of the war. Custume Barracks, Athlone, 26 November 2011 | | Article in Journal | | 2013 |
| The year-and-a-half : training horses in counties Roscommon and Longford | Delaney, James | Article in Journal | | 1984 |
| The years before | Rehill, Pádraig | Article in Book | | 1998 |
| Threshers: the Special Commission of 1806 and after | Mac Sheoin, Tomás | Article in Journal | | 2021 |
| Times past in pictures : a millennium celebration of Co. Longford in photographs : over 100 years of life in Co. Longford as seen through the camera lens | | Monograph or Collective Volume | Longford Historical Society | 1999 |
| Tomás Ó Catháin, a note on the battle of Ballinamuck | Ó Catháin, Diarmaid | Article in Journal | | 1997 |
| Treatyite politics in County Longford 1923-1933 - an analysis of the Cumann na nGaedheal organisation | Farrell, Mel | Article in Journal | | 2011 |
| Tús ré an 'Folk Revival' | O'Hara, Aidan | Article in Journal | | 2007 |
| Tutor to the Edgeworths : Rev. Frederic Potterton (1826-1912) | Potterton, Homan | Article in Journal | | 2011 |
| Under the thatch : memories of a Longford childhood | Ó Súilleabháin, Seán | Monograph or Collective Volume | Seán Ó Súilleabháin | 2018 |
| Who fears to speak of '98 | Rehill, Pádraig | Article in Book | | 1998 |
| Window on a Catholic parish : St. Mary's, Granard, Co. Longford, 1933-68 | Kelly, Francis | Monograph or Collective Volume | Irish Academic Press | 1996 |
| Wine, genealogy and cross-dressing | Capstick, Joan | Article in Journal | | 2018 |