| Drawing conclusions : a cartoon history of Anglo-Irish relations, 1798-1998 | Douglas, RoyHarte, LiamO'Hara, Jim | Monograph or Collective Volume | Blackstaff Press | 1998 |
| Ireland since 1690 : a concise history | Douglas, RoyHarte, LiamO'Hara, Jim | Monograph or Collective Volume | Blackstaff Press | 1999 |
| Land, people and politics : a history of the land question in the United Kingdom, 1878-1952 | Douglas, Roy | Monograph or Collective Volume | Allison and Busby | 1976 |
| Lloyd George and the partition of Ireland 1916-1921 | Douglas, Roy | Article in Journal | | 2001 |