| Famine and folklore stories from the Rhode area as gathered for the schools manuscript commission | O'Connor, Mary | Monograph or Collective Volume | | 2023 |
| On the beat : a woman's life in the Garda Síochána | O'Connor, Mary T. | Monograph or Collective Volume | Gill & Macmillan | 2005 |
| Our roots under the rock : the O'Connor family history, 1833-2006 | O'Connor, Mary | Monograph or Collective Volume | An Ríocht | 2006 |
| The complementary merits of valuation, census and cartographic data in revealing Ireland c.1850 | O'Connor, Mary B. | Article in Journal | | 1998 |