| A note on John K'Eogh's 'Herbal' | Williams, N. J. A. | Article in Journal | | 1987 |
| A note on Scáthan Shacramuinte na hAithridhe | Williams, N. J. A. | Article in Journal | | 1979 |
| A seal of an Irish regiment in the service of the King of France | Williams, N. J. A. | Article in Journal | | 1992 |
| Dánta Mhuiris Mhic Dháibhí Dhuibh Mhic Gearailt. (Leabhar thaighde, 30ú himleabhar) | | Monograph or Collective Volume | | 1979 |
| Dermot O'Connor's blazons and Irish heraldic terminology | Williams, N. J. A. | Article in Journal | | 1990 |
| Gaelic texts and English script | Williams, N. J. A. | Article in Book | | 2010 |
| Leagan cainte in Párliament na mBan | Williams, N. J. A. | Article in Journal | | 1978 |
| Notaí éagsúla ar Phairlement Chloinne Tomáis | Williams, N. J. A. | Article in Journal | | 1978 |
| Of beasts and banners : the origins of the heraldic enfield | Williams, N. J. A. | Article in Journal | | 1989 |
| Pairlement Chloinne Tomáis | | Monograph or Collective Volume | Institute for Advanced Studies | 1981 |
| Some Irish plant names | Williams, N. J. A. | Article in Book | | 1989 |
| The poems of Giolla Brighde Mac Con Midhe | | Monograph or Collective Volume | | 1980 |
| Thomas Wilson, Francis Hutchinson and Litriu na Gaeilge | Williams, N. J. A. | Article in Journal | | 1986 |
| William Bedell: piúratánach, easpag, aistritheoir | Williams, N. J. A. | Article in Book | | 1990 |