| A great Irish official | Gwynn, Stephen Lucius, 1864-1950 | Article in Journal | | 1923 |
| An Irish chronicle | Gwynn, Stephen Lucius, 1864-1950 | Article in Journal | | 1938 |
| Dublin old and new | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Browne and Nolan | 1938 |
| Henry Grattan and his times | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Browne and Nolan | 1939 |
| Home Rule and the House of Lords | Gwynn, Stephen Lucius, 1864-1950 | Article in Journal | | 1913 |
| Irish literature and drama in the English language : a short history | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Nelson | 1936 |
| John Redmond's last years | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | | 1919 |
| Memoirs of Miles Byrne | Byrne, MilesGwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | [s.n.] | 1907 |
| Memoirs of Sir Lowry Cole | Cole, Galbraith Lowry, Sir, 1772-1842Cole, Maud LowryGwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Macmillan | 1934 |
| Memories of enjoyment | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Kerryman | 1947 |
| Protestants under Home Rule | Gwynn, Stephen Lucius, 1864-1950 | Article in Journal | | 1913 |
| Sarsfield | Gwynn, Stephen Lucius, 1864-1950 | Article in Book | | 1903 |
| Scattering branches : tributes to the memory of W. B. Yeats | | Monograph or Collective Volume | Macmillan | 1940 |
| Stories from Irish history | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Browne and Nolan | 1945 |
| The case for Home Rule | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | Maunsell | 1911 |
| The charm of Ireland. Her places of beauty, entertainment, sport and historic association | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | | 1934 |
| The history of Ireland | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | | 1923 |
| Thomas Moore | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | | 1905 |
| Walter Osborne and Ireland 1859-1903 | Gwynn, Stephen Lucius, 1864-1950 | Article in Journal | | 1943 |