| 1798 i gcúige Uladh | Ó Gadhra, Nollaig | Article in Book | | 1998 |
| An chéad Dáil Éireann (1919-1921), (agus an Ghaeilge) | Ó Gadhra, Nollaig | Monograph or Collective Volume | Coiscéim | 1989 |
| An Ghaeltacht (Oifigiúil) agus 1992 | Ó Gadhra, Nollaig | Monograph or Collective Volume | Coiscéim | 1989 |
| An Gordon Wilson a bhfuil chuimhne agamsa oir | Ó Gadhra, Nollaig | Article in Journal | | 1995 |
| Bearna agus na Forbacha | Ó Gadhra, Nollaig | Article in Book | | 2000 |
| Civil war in Connacht, 1922-23 | Ó Gadhra, Nollaig | Monograph or Collective Volume | Mercier Press | 1999 |
| Éamann Iognáid Rís, 1762-1844 | Ó Gadhra, Nollaig | Monograph or Collective Volume | An Sagart | 1996 |
| Éamonn Iognáid Rís | Ó Gadhra, Nollaig | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1977 |
| Éire agus polaitiocht na hEorpa : leargas ar thoghacain dhireacha an Chomhphobail Eorpaigh | Ó Gadhra, Nollaig | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1986 |
| Faith, fatherland and mother tongue | Ó Gadhra, Nollaig | Article in Book | | 2001 |
| Fianna Fáil agus an Ghaeilge | Ó Gadhra, Nollaig | Article in Book | | 1996 |
| Fianna Fáil agus an Ghaeilge : “Dha arm aigne”? | Ó Gadhra, Nollaig | Article in Journal | | 1996 |
| Gaelic Ireland | Ó Gadhra, Nollaig | Article in Book | | 1986 |
| Gaeltacht Mhaigh Eo. | Ó Gadhra, Nollaig | Monograph or Collective Volume | Clódhanna Teoranta | 1983 |
| James Boyle O'Reilly agus an glór Gael-Mheiriceánach | Ó Gadhra, Nollaig | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1976 |
| John Boyle O'Reilly and an glór Gael-Mheiriceánach | Ó Gadhra, Nollaig | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1975 |
| Niall Ó Bléine - ceannaire náisiúnta? | Ó Gadhra, Nollaig | Article in Journal | | 1996 |
| Oidhreacht Chonradh na Gaeilge, 1983-1993. (Bunaithe ar nótaí a ullmhaíodh don Léacht Tionscaimh a thug an t-údar Nollaig Ó Gadhra ag Éigse Uladh i nGaoth Dobhair, k Marta 1993) | Ó Gadhra, Nollaig | Article in Journal | | 1994 |
| Oidhreacht Neil T. Bhleine R.I.P. | Ó Gadhra, Nollaig | Article in Journal | | 1996 |
| Oidreacht pholaitiúil an Bhleinigh | Ó Gadhra, Nollaig | Article in Journal | | 1996 |
| Public reaction to the 1916 rising | Ó Gadhra, Nollaig | Article in Book | | 1976 |
| What future for the Irish Gaeltacht communities in the twenty-first century? | Ó Gadhra, Nollaig | Article in Journal | | 2005 |