| Bannfield over four centuries | Mullin, T. H. | Article in Journal | | 1994 |
| Coleraine in by-gone centuries | Mullin, T. H. | Monograph or Collective Volume | Century | 1976 |
| Coleraine in Georgian times | Mullin, T. H. | Monograph or Collective Volume | Century | 1977 |
| Coleraine in modern times | Mullin, T. H. | Monograph or Collective Volume | The author | 1979 |
| Families of Ballyrashane : a district of Northern Ireland | Mullin, T. H. | Monograph or Collective Volume | News Letter Printing Co. | 1969 |
| Limavady and the Roe valley | Mullin, T. H. | Monograph or Collective Volume | [s.n.] | 1983 |
| Stirlings in Scotland, Ulster and America | Mullin, T. H. | Article in Journal | | 1996 |
| The Ulster clans : O'Mullan, O'Kane, O'Mellan | Mullan, JohnMullin, T. H. | Monograph or Collective Volume | B.N.L. Printing Co. | 1966 |
| The Wyllys of Coleraine, the West Indies and Georgia : an account of a family who emigrated from Coleraine | Mullin, T. H. | Article in Journal | | 1999 |
| Ulster's historic city Derry, Londonderry | Mullin, T. H. | Monograph or Collective Volume | Coleraine Bookshop | 1986 |