- Annesley family, Earls Annesley (addnl): estate rentals and cash books (D/1503)
- Brownlow family, Barons Lurgan of Lurgan (addnl): estate maps (4 vols) 1751-1841 (D/1928)
- McCready family of County Down: family papers (D/4280)
- Robert Denis Collison Black (b 1922), professor of economics (addnl): papers (D/4115)
- Thomas William Boyd (1903-91), Northern Ireland Labour Party MP: political papers (D/4276)
- Thomas Colbourne, architect: five unexecuted plans of Killyfaddy House, Clogher, County Tyrone (D/4283)
- Joseph O'Dolan, internee on the prison ship Argenta: autograph book (copy) c1947 (T/3873)
- Barbour Threads Ltd, sewing threads manufacturers, Hilden, County Antrim: business papers (D/4272)
- 1st and 2nd Donagheady Presbyterian Church: baptism and marriage registers and communicants' rolls 1838-1976 (MIC1P/458-459)
- 1st Lisburn Presbyterian Church: marriage registers, session and committee minutes and communicants' roll book (MIC1P/159)
- Ballyrashane parish, County Londonderry: registers of baptisms, marriages and registers 1877-1958 (MIC/1/338)
- Belfast Co-operative Society (addnl): title deeds c1909-70 (D/3895)
- Coleraine Congregational Church: minute books (3 vols) 1844-98 (MIC/1G/1)
- Irish Ladies' Golf Union: minute books (9 vols) 1911-88 (D/4278)
- Killdollagh parish, County Londonderry: registers of baptisms, marriages and burials 1858-1958 (MIC/1/337)
- North Cricket Club, Belfast: records c1880-1990 (D/4286)
- Northern Ireland Athletics Federation: records 1934-96 (D/4282)
- Pharmaceutical Society of Northern Ireland: minutes, corresp and photographs 1925-82 (D/4275)
- St Patrick's Church of Ireland parish, Ballymena, and Ballyclug parish, County Antrim: registers, preachers' books and vestry minutes (CR1/78-79)
- St Paul's parish, Castewellan, County Down: baptism register 1872-1950 (MIC/1/339)
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