- Coal Authority: records rel to colliery closures, spoil heaps and the Neath-Abergavenny trunk road c1950-90
- George Sydney Davies of Swansea: diary 1866-79
- Dynevor estates, West Glamorgan (addnl): papers 19th-20th cent
- Ffynone estate, Swansea: deeds and papers 1882-1934
- Independent Order of Oddfellows, Swansea district: records 1884-1924
- Jonah Arnold and Smith, architects, Neath: records c1930-80
- Loughor Welfare Hall Trust: records 1890-1992
- H Grindell Matthews (1880-1941), inventor of the death ray: papers
- National Union of Railwaymen, Swansea No 1 Branch: minutes 1933-94
- National Coal Board, Scientific Department, Swansea: records c1950-70
- Neath Home Guard: records c1941
- Pontarddulais and District Trades and Labour Council: minutes 1925-41
- Swansea, Port Talbot and Llanelli docks: records rel to World War II operations
- Swansea Unitarian Church: records 1909-69
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West Glamorgan Archive Service