| Distance, time and rural communities in Ireland | Thomas, Colin | Article in Book | | 1986 |
| Historical dictionary of Ireland | Thomas, Colin J. | Monograph or Collective Volume | Scarecrow | 1997 |
| Register of the Cathedral Church of St Columb, Derry, 1732-1775 | | Monograph or Collective Volume | Representative Church Body Library | 1999 |
| Register of the Cathedral Church of St. Columb, Derry, 1703-1732 | | Monograph or Collective Volume | Respresentative Church Body Library | 1997 |
| Rural landscapes and communities : essays presented to Desmond McCourt | | Monograph or Collective Volume | Irish Academic Press | 1986 |
| The City of Londonderry : demographic trends and socio-economic characteristics 1650-1900 | Thomas, Colin | Article in Book | | 1999 |