| 22938 | Down and Connor Diocesan Archive (RC) | A-T | 1779 | A. 18th Century correspondence and correspondence da... | |
| 22939 | Down and Connor Diocesan Archive (RC) | A-T | 1779-1825 | B. Correspondence of Bishops Hugh McMullan, Patrick ... | |
| 22940 | Down and Connor Diocesan Archive (RC) | A-T | 1825-1835 | C. Correspondence of Bishop/Archbishop William Croll... | |
| 22941 | Down and Connor Diocesan Archive (RC) | A-T | 1865-1885 | D. Correspondence of Bishop Patrick Dorrian, 1865-18... | |
| 22942 | Down and Connor Diocesan Archive (RC) | A-T | 1921-1989 | E. Information relating to education, for example:E.... | |
| 22943 | Down and Connor Diocesan Archive (RC) | A-T | | Episcopal correspondence, including, for example:EP.... | |
| 22945 | Down and Connor Diocesan Archive (RC) | A-T | | LT. Information relating to the liturgy, including, ... | |
| 22944 | Down and Connor Diocesan Archive (RC) | A-T | 1859
1832-1934 | L. Information relating to lay organisations, for ex... | |
| 22946 | Down and Connor Diocesan Archive (RC) | A-T | 1957 | MD. Information relating to the media, including, fo... | |
| 22947 | Down and Connor Diocesan Archive (RC) | A-T | | MH.1 Information relating to the Mater Hospital, Bel... | |
| 22948 | Down and Connor Diocesan Archive (RC) | A-T | | N. Information relating to national and cultural org... | |
| 22949 | Down and Connor Diocesan Archive (RC) | A-T | 1966-1969
1914 | O. Information relating to the Orphan Society, inclu... | |
| 22950 | Down and Connor Diocesan Archive (RC) | A-T | | OL. and OLT. Information relating to O'Laverty and t... | |
| 22951 | Down and Connor Diocesan Archive (RC) | A-T | | P. Information relating to various parishes, includi... | |
| 22952 | Down and Connor Diocesan Archive (RC) | A-T | | Q. Photographs, including, for example:Q.5 Photograp... | |
| 22953 | Down and Connor Diocesan Archive (RC) | A-T | | R. Information relating to religious sisters, for ex... | |
| 22954 | Down and Connor Diocesan Archive (RC) | A-T | | S.23 Sacerdotes - Confessors for nuns. | |
| 22955 | Down and Connor Diocesan Archive (RC) | A-T | | T. Information relating to theology, including, for ... | |