| An overview of Mayo's archaeological and historic settlement | O'Hara, Bernard | Article in Journal | | 2017 |
| Davitt | O'Hara, Bernard | Monograph or Collective Volume | Mayo County Council in association with the Michael Davitt Memorial Association | 2006 |
| Killasser : a history | | Monograph or Collective Volume | The author | 1981 |
| Killasser: heritage of a Mayo parish | O'Hara, Bernard | Monograph or Collective Volume | Killasser Callow Heritage Society | 2011 |
| Mayo : aspects of its heritage | O'Hara, Bernard | Monograph or Collective Volume | Regional Technical College | 1982 |
| Michael Davitt remembered | O'Hara, Bernard | Article in Journal | | 2007 |
| Michael Davitt remembered | O'Hara, Bernard | Monograph or Collective Volume | Michael Davitt National Memorial Association | 1984 |
| Peadar O'Dowd, 1941-2024: A Tribute | O'Hara, Bernard | Article in Journal | | 2024 |
| Regional Technical College, Galway : the first 21 years | O'Hara, Bernard | Monograph or Collective Volume | Research and Consultancy Unit, Regional Technical College, Galway | 1993 |
| The archaeological heritage of Killasser, Co. Mayo | O'Hara, Bernard | Monograph or Collective Volume | Galway Regional Technical College, Research and Development Unit | 1991 |