| 'McCaffery' : a ballad | Harper, H. S. | Article in Journal | | 1946 |
| 'The Church-Going Bell': a sermon preached in the Parish church of S. Patrick, Coleraine, at the dedication of a memorial peal of bells on Easter Day, April 2, 1893 | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | W. & G. Baird [Printer] | 1893 |
| A calendar of the Liber Niger and Liber Albus of Christ Church, Dublin | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1908 |
| A calendar of the register of Archbishop Fleming | | Article in Journal | | 1912 |
| A calendar of the register of Archbishop Sweteman | | Article in Journal | | 1911 |
| A preliminary survey of the ancient monuments of Northern Ireland | | Monograph or Collective Volume | The Stationery Office | 1940 |
| A sixth-century Irish headache cure and its use in a south German monastery | Hasenfratz, H.Isler, H.O'Neil, T. | Article in Journal | | 1996 |
| A wedding, a family feud, a long costly lawsuit - and tragedy. Transcribed from the 'Belfast Telegraph', Monday 4 November 1940 | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 2000 |
| Acts of Supremacy : the British Empire and the Stage, 1790-1930 | Bratton, Jacqueline SusanCave, R. A.Gregory, BreandanHolder, H. J.Pickering, Michael | Monograph or Collective Volume | | 1991 |
| An ancient route, the Slighe Miodhluachra in Ulaidh | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1938 |
| An examination of the theology of reconciliation as taught and practised by reconciliation groups in Northern Ireland : 1960-2002 | Fischer, H. P. F. | Thesis | | |
| An Irish parish in changing days | Lyster, H. Cameron | Monograph or Collective Volume | Griffiths | 1933 |
| Antiquities found during course of the River Bann drainage scheme | Lawlor, H.C. | Article in Journal | | 1932 |
| Autobiography | Gerald, of Wales, c.1146-1220x23 | Monograph or Collective Volume | [s.n.] | 1937 |
| Booter Park | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1931 |
| Booter Park | Lawlor, H. J. | Article in Journal | | 1931 |
| Calendar of the Liber Ruber of the diocese of Ossory | | Article in Journal | | 1908 |
| Carved upright stone near the south face of Clogher Cathedral Tower, co. Tyrone | Lawlor, H.C. | Article in Journal | | 1931 |
| Chapters on the Book of Mulling | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | Douglas | 1897 |
| Degen of Kilconriola | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1938 |
| Der königliche Palast in keltischer Tradition | Wagner, H. | Article in Journal | | 1974 |
| Derry Cathedral : a book of the bells : service of dedication, July 25th, at 6.30p.m.: the story of the bells 1614-1929 | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1917 |
| Diary of William King, D.D., archbishop of Dublin, during his imprisonment in Dublin castle | | Article in Journal | | 1904 |
| Die Ps.-Dionysiuskommentare "In Coelestem Hierarchiam" des Skotus Eriugena und Hugos von St Viktor | Weisweiler, H. | Article in Journal | | 1952 |
| Diocesan anomalies (the diocese of Connor) | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1939 |
| Divisions of the Nendrum sun-dial | Lawlor, H.C. | Article in Journal | | 1926 |
| Downpatrick castle : a conjectural restoration | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1938 |
| Dunluce and its owners prior to the Norman invasion | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1936 |
| Early money of Ireland | Miller, H. E. | Article in Journal | | 1923 |
| Ecclesia Hibernicana : die Synode von Inis Pádraig im Jahre 1148 | Immenktter, H. | Article in Journal | | 1985 |
| Father John MacEnery : scientist or charlatan? | Alexander, E. M. M.Wilker, H. H. | Article in Journal | | 1964 |
| Fifty years ago | Lalor, H. R. | Article in Journal | | 1979 |
| Find of two urns at Knockahollet, near Armoy, county Antrim | Lawlor, H.C. | Article in Journal | | 1935 |
| First recorded Celtic invasion of Ulster | Gallagher, H. W. | Article in Journal | | 1978 |
| Fisheries (Ireland) Acts : being the statutes relating to salmon, trout, pollen, eel, oyster and other fisheries in Ireland | Conner, H. D. | Monograph or Collective Volume | | 1892 |
| Foundation of St. Mary's Abbey, Dublin | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1926 |
| Fragments of a lost register of the diocese of Clogher | | Article in Journal | | 1916 |
| Garryowen | Farmer, H. G. | Article in Journal | | 1949 |
| Grotesque carvings improperly called Sheela na gigs | Lawlor, H.C. | Article in Journal | | 1927 |
| Handbook of the coins of Great Britain and Ireland in the British Museum ... | Greuber, H. A. | Monograph or Collective Volume | | 1899 |
| Handbook of the coins of Great Britain and Ireland in the British Museum, with sixty-four plates | Grueber, H. A. | Monograph or Collective Volume | | 1899 |
| Irish economics, 1700-83 : a bibliography with notes | Wagner, H. R. | Monograph or Collective Volume | | 1907 |
| Irish houses; history, architecture, furnishing | Olbricht, K.-H.Wegener, H. M. | Monograph or Collective Volume | | 1984 |
| John Wesley and primitive physic | Gallagher, H. W. | Article in Journal | | 2000 |
| Kenbaan Castle, county Antrim | Lawlor, H.C. | Article in Journal | | 1928 |
| Killyleagh castle, Co. Down | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1939 |
| Land use in medieval Ireland : a review of the documentary evidence | Jäger, H. | Article in Journal | | 1983 |
| Land-und Fortwirtschaftliche Bodennutzung im mittelalterlichen Irland | Jäger, H. | Article in Journal | | 1979 |
| Les débuts de l'art cistercien en Irlande d'après les vestiges des abbayes de Mellifont (Louth) et de Baltinglass (WIcklow) | Beuer-Szlechter, H. V. | Article in Journal | | 1970 |
| Mallow Methodism | Bolster, H. L. Frank, Rev. | Article in Journal | | 1992 |
| Mote and mote-and-bailey castles in de Courcy's principality of Ulster | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1939 |
| Mote, moat, or motte | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1939 |
| Note of the register of Archbishop Alen | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1907 |
| Note on the church of St. Michan, Dublin | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1926 |
| Notes on St. Bernard's Life of St. Malachy and his two sermons on the passing of St. Malachy | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1919 |
| Obituary. Pádraig Ó Cuimín | R, H. | Article in Journal | | 2010 |
| Palace Anne, Co. Cork | Conner, H. L. | Article in Journal | | 1957 |
| Patrick Archer of London and Waterford, merchant. Temp. Charles I and Charles II | Archer, H. G. | Article in Journal | | 1920 |
| Rise of the linen merchants in the eighteenth century | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1941 |
| Roscommon authors : a contribution towards a biographical and bibliographical index of Roscommon authors | Maher, H. | Monograph or Collective Volume | Roscommon County Library | 1978 |
| Some curious rock carvings in county Mayo | Lawlor, H.C. | Article in Journal | | 1927 |
| Some primitive crosses in counties Antrim and Down | Lawlor, H.C. | Article in Journal | | 1937 |
| Some tentative deductions arising from the study of three ancient monuments in Northern Ireland | Lawlor, H.C. | Article in Journal | | 1930 |
| St Michael's parish | Wheeler, H. A. | Article in Journal | | 1960 |
| St. Bernard of Clairvaux's Life of St. Malachy of Armagh | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | | 1920 |
| Studies in the origins of early Celtic traditions | Wagner, H. | Article in Journal | | 1975 |
| The autobiography of Giraldus Cambrensis | Gerald, of Wales, c.1146-1220x23 | Monograph or Collective Volume | Cape | 1937 |
| The castle of Enniskillen | Lawlor, H.C. | Article in Journal | | 1926 |
| The Cathach of St Columba | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1916 |
| The chapel of Dublin Castle | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1923 |
| The chapel of the ford, Belfast | Cassidy, WilliamLawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1945 |
| The deaneries of St. Patrick's | Lawlor, H. J. | Article in Journal | | 1932 |
| The Dublin city churches of the Church of Ireland | Wheeler, H. A. | Monograph or Collective Volume | A.P.C.K. | 1948 |
| The Fasti of St. Patrick's, Dublin. | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | | 1930 |
| The form and manner of making a dean and other forms used in the Cathedral and Collegiate Church of St. Patrick, Dublin | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | Ponsonby & Gibbs at the University Press | 1912 |
| The genesis of the diocese of Clogher | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1917 |
| The genesis of the dioceses of Derry and Raphoe | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1917 |
| The genesis of the linen thread trade | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1943 |
| The Giant's Sconce, co. Derry | Lawlor, H.C. | Article in Journal | | 1930 |
| The identification of the castle of Magh Cobha, Co. Down | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1938 |
| The Irish element in medieval culture | Edmands, Jane LoringZimmer, H. | Monograph or Collective Volume | Folcroft Library Editions | 1978 |
| The Kilkenny theatre, 1801-1819 | Butler, H. | Article in Journal | | 1946 |
| The martyrology of Tallaght | | Monograph or Collective Volume | | 1931 |
| The monastery of Saint Mochaoi of Nendrum | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Monograph or Collective Volume | The Belfast Natural History and Philosophical society | 1925 |
| The monuments of the pre-reformation archbishops of Dublin | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1917 |
| The monuments of the pre-Reformation archbishops of Dublin | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Book | | 1990 |
| The Origin of Some Common Surnames | Lawlor, H.C. | Article in Journal | | 1925 |
| The Reformation and the Irish episcopate. | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | | 1932 |
| The register of Provost Winter (Trinity College Dublin), 1650-1660 | | Article in Journal | Parish Register Society of Dublin | 1907 |
| The Rosslyn missal : an Irish manuscript in the Advocates' Library, Edinburgh | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Monograph or Collective Volume | [s.n.] | 1899 |
| The so-called Cloch Oir at Clogher Cathedral | Lawlor, H.C. | Article in Journal | | 1931 |
| The vassals of the earls of Ulster | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1941 |
| The war in Wexford : an account of the rebellion in the south of Ireland in 1798, told from original documents | Broadley, Alexander Meyrick, 1847-1916Wheeler, H. F. B. | Monograph or Collective Volume | | 1910 |
| Three bronze cauldrons or bowls | Lawlor, H.C. | Article in Journal | | 1933 |
| Über direkte Handelsverbindungen Westgalliens mit Irland im Altertum und frühen Mittelalter | Zimmer, H. | Article in Journal | | 1909 |