| 'A candidate who seemed tailor-made for the job' | Mitchell, Thomas | Article in Book | New Island | 2015 |
| 'A tainted source'? : The Irish Bulletin, 1919-21 | Kenneally, Ian | Article in Book | Four Courts Press | 2014 |
| 'An extraordinary clever journalist' : Arthur Griffith's editorships, 1899-1919 | Kenny, Colm | Article in Book | Four Courts Press | 2014 |
| 'An invaluable legacy to future generations of educationalists' | Hyland, Áine | Article in Book | New Island | 2015 |
| 'By today's standards it was a cramped office' | Quinn, Ruairí | Article in Book | New Island | 2015 |
| 'Challenging the headship of man' : militant suffragism and the Irish Citizen | Tiernan, Sonja | Article in Book | Four Courts Press | 2014 |
| 'Denounced from Catholic pulpits all around the country' | Robinson, Mary | Article in Book | New Island | 2015 |
| 'Facile ignorance' and 'wild wild women' : religion, journalism and social change in Ireland, 1961-1979 | O'Brien, Mark | Article in Book | New Island | 2015 |
| 'The best interests of the nation' : Frank Geary, the 'Irish Independent' and the Spanish Civil War | O'Brien, Mark | Article in Book | | 2012 |
| 'With the Irish in France' : the national press and recruitment in Ireland, 1914-1916 | O'Brien, Mark 1973- | Article in Journal | | 2016 |
| All the news of interest': the Kerryman, 1904–88 | O'Brien, Mark | Article in Book | | 2018 |
| Commerce and the church : the factors that shaped new journalism in the Irish Independent | O'Brien, Mark : Rafter, Kevin | Article in Journal | | 2015 |
| Cultivating ‘the heavies or opinion-forming press’ : nation branding, Irish economic development and the British press, 1958–1966 | O'Brien, Mark | Article in Journal | | 2023 |
| De Valera, Fianna Fail and the Irish Press : truth in the news? | O'Brien, Mark | Monograph or Collective Volume | Irish Academic Press | 2001 |
| Fighting and writing : journalists and the 1916 Easter Rising | O'Brien, Mark | Article in Journal | | 2018 |
| Fourth estate : Journalism in Twentieth-century Ireland | O'Brien, Mark | Monograph or Collective Volume | Manchester University Press | 2017 |
| In the public interest? political sex scandals and the media in Ireland | O'Brien, Mark | Article in Journal | | 2022 |
| Independent Newspapers and Irish society, 1973-98 | O'Brien, Mark | Article in Book | | 2012 |
| Independent newspapers: a history | O'Brien, Mark,Rafter, Kevin | Monograph or Collective Volume | Four Courts Press | 2012 |
| Introduction : political censorship and the democratic state | Corcoran, Mary P.O'Brien, Mark | Article in Book | | 2005 |
| Media and the Irish diaspora from the twentieth century to the present | O'Brien, Mark | Article in Book | | 2024 |
| Other voices : The Bell and documentary journalism | O'Brien, Mark | Article in Book | | 2014 |
| Periodicals and journalism in twentieth-century Ireland 2: a variety of voices | NA | Monograph or Collective Volume | Four Courts Press | 2021 |
| Periodicals and journalism in twentieth-century Ireland : Writing against the grain | | Monograph or Collective Volume | Four Courts | 2014 |
| Policing the press : censorship, family planning, and the press in Ireland, 1929–67 | O'Brien, Mark | Article in Journal | | 2021 |
| Policing the press: censorship, family planning, and the press in Ireland, 1929–67 | O'Brien, Mark | Article in Journal | | 2021 |
| Political censorship and the democratic state : the Irish broadcasting ban | | Monograph or Collective Volume | Four Courts | 2005 |
| The Irish Times : a history | O'Brien, Mark | Monograph or Collective Volume | Four Courts | 2008 |
| The state in transition : essays in honour of John Horgan | | Monograph or Collective Volume | New Island | 2015 |
| Whose war was it anyway? Irish journalism and the Great War after 1918 | O'Brien, Mark 1973- | Article in Journal | | 2016 |
| Writing from the margins : In Touch, Identity, Out and GCN | O'Brien, Mark | Article in Book | | 2021 |
| ‘Indecent and suggestive pictorial matter’ : banning Picture Post in Ireland | O'Brien, Mark | Article in Journal | | 2023 |
| ‘With the Irish in France’ : the national press and recruitment in Ireland 1914-1916 | O'Brien, Mark | Article in Journal | | 2016 |