The Society publishes single-volume editions of important historical sources relating to South Wales, with introductory texts, indexes and illustrations.
- Morganiae Archaiographia: a book of the antiquities of Glamorganshire, by Rice Merrick (1983)
- Map of Glamorgan (1799)
- Map of the County of Monmouth (1830)
- Diaries of John Bird 1790–1803
- Llandaff Episcopal Acta, 1140–1287
- Letterbook of Richard Crawshay, 1788–1797
- Diocese of Llandaff in 1763
- History of Monmouthshire, Vol. 5
- The Penrice Letters, 1768–1795
- The Glamorgan Hearth Tax Assessment of 1670 (out of print)
- The Diary of William Thomas, 1762–1795
- Monmouthshire Wills proved in the Prerogative Court of Canterbury, 1560–1601
- St Davids Episcopal Acta, 1085–1280
- The Letterbook of John Byrd, Customs Collector in South-East Wales, 1647–80
- The Pennard Manor Court Book 1673–1701
- The Letter-Books of W. Gilbertson & Co., Pontardawe, 1890–1929
- The Letters of Edward Copleston, Bishop of Llandaff, 1828–49
- 'Women's Rights and Womanly Duties': The Aberdare Women's Liberal Association, 1891–1910
- The Household Accounts of the Aubreys of Llantrithyd 1621–1637
- In conversation with Napoleon Bonaparte: J. H. Vivian's visit to the Island of Elba (2008)
- Men at Arms: musters in Monmouthshire, 1539 and 1601–2 (2009)
- The Swansea Wartime Diary of Laurie Latchford, 1940–41 (2010)
- Robert Morris and the first Swansea Copper Works, c.1727–1730 (2010)
- The Correspondence of Thomas Henry Thomas 'Arlunydd Penygarn' (2012)
- War Underground. Memoirs of a Bevin Boy in the South Wales Coalfield (2013)
- Cas gan gythraul: Demonology, Witchcraft and Popular Magic in Eighteenth-century Wales (2015)
- 'I hope to have a good passage...': the business letters of Captain Daniel Jenkins, 1902–11 (2016)
- A Spiritual Botanology: Shewing What of God Appears in the Herbs of the Earth; Together with Some of Their Natural Virtues and Uses: In Blank Verse, and Rhime. By S. Lucilius Verus (Edmund Jones) (2017)
- Charley's War: the diary of Charles Parkinson Heare, 2nd Battalion The Monmouthshire Regiment, 1914–1919 (2018)
Some publications have been digitised by the Welsh Journals Online project at the National Library of Wales.
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