| Baithin 2000 - plans to celebrate the 1,400th anniversay of the death of St Baithin | Crooks, D. W. T. | Article in Journal | | 1999 |
| Clergy of Cashel and Emly, compiled by the Ven St. J. D. Seymour ; Clergy of Leighlin, compiled by the Canon J. B. Leslie : biographical succession lists | | Monograph or Collective Volume | Ulster Historical Foundation; Cashel and Ossory Diocesan Council | 2012 |
| Clergy of Derry and Raphoe | | Monograph or Collective Volume | Ulster Historical Foundation: Diocesan Council of Derry & Raphoe | 1999 |
| Clergy of Killaloe, Kilfenora, Clonfert and Kilmacduagh | Leslie, J. B. (James Blennerhassett) | Monograph or Collective Volume | Ulster Historical Foundation and Diocesan Council of Limerick and Killaloe | 2010 |
| Clergy of Kilmore, Elphin and Ardagh : biographical succession lists | | Monograph or Collective Volume | Ulster Historical Foundation|Diocesan Council Kilmore, Elphin and Ardagh | 2008 |
| Clergy of Tuam, Killala and Achonry : biographical succession lists | | Monograph or Collective Volume | Ulster Historical Foundation|Diocesan Council Tuam, Killala and Achonry | 2008 |
| In the footsteps of Saint Baithin : a history of the parishes of Taughboyne with Craigdooish, All Saints, Newtowncunningham, Christ Church, Burt and Killea, Carrigans | Crooks, D. W. T. | Monograph or Collective Volume | [s.n.] | 1993 |
| Living stones : a historical survey of the churches of the dioceses of Derry and Raphoe | Crooks, D. W. T. | Monograph or Collective Volume | The author | 2001 |