| "Government sources said last night ..." : the development of the parliamentary press lobby in modern Ireland | Horgan, John, b. 1940 | Article in Book | University College Dublin Press | 2001 |
| 'The great war correspondent': Francis McCullagh, 1874-1956 | Horgan, John, b. 1940 | Article in Journal | | 2009 |
| Arms dumps and the IRA, 1923-32 | Horgan, John, b. 1940 | Article in Journal | | 1998 |
| Broadcasting and public life : RTE news and current affairs, 1926-1999 | Horgan, John, b. 1940 | Monograph or Collective Volume | Four Courts | 2004 |
| Churches, governments and the media : confronting their own and each other's responsibilities | Horgan, John, b. 1940 | Article in Book | | 2003 |
| Fianna Fáil & arms decommissioning 1923-32 | Horgan, John, b. 1940 | Article in Journal | | 1997 |
| Great Irish reportage | | Monograph or Collective Volume | Penguin Ireland | 2013 |
| Irish foreign policy, Northern Ireland, neutrality and the Commonwealth : the historical roots of a current controversy | Horgan, John, b. 1940 | Article in Journal | | 1999 |
| Irish media : a critical history since 1922 | Horgan, John, b. 1940 | Monograph or Collective Volume | Routledge | 2001 |
| Journalists and Censorship : a case history of the NUJ in Ireland and the broadcasting ban 1971–94 | Horgan, John, b. 1940 | Article in Journal | | 2002 |
| Labour : the price of power | Horgan, John, b. 1940 | Monograph or Collective Volume | Gill & Macmillan | 1986 |
| Mary Robinson : an independent voice | Horgan, John, b. 1940 | Monograph or Collective Volume | O'Brien Press | 1997 |
| Noel Browne passionate outsider | Horgan, John, b. 1940 | Monograph or Collective Volume | Gill & Macmillan | 2000 |
| Seán Lemass : a man in a hurry | Horgan, John, b. 1940 | Article in Book | | 1996 |
| Seán Lemass : the enigmatic patriot | Horgan, John, b. 1940 | Monograph or Collective Volume | Gill & Macmillan | 1997 |
| The media and the state : television and the press 1949-99 | Horgan, John, b. 1940 | Article in Book | | 2000 |