| First world nationalisms : class and ethnic politics in Northern Ireland and Quebec | O'Sullivan, Catherine | Monograph or Collective Volume | Chicago University Press | 1986 |
| Hospitality in medieval Ireland, 900-1500 | O'Sullivan, Catherine | Monograph or Collective Volume | Four Courts | 2004 |
| Hospitality in medieval Ireland, 900-1500 | O'Sullivan, Catherine Marie | Thesis | | 2001 |
| The Irish at Bunker Hill : evidence of Irish participation in the battle of 17th June 1775 | O'Brien, Michael JosephSullivan, A. M.Sullivan, Catherine | Monograph or Collective Volume | Irish University Press | 1968 |