Deeds, 1542-1797, relating to properties in Glamorgan, Brecknockshire and Carmarthenshire; memorandum book of ?Samuel Owsley and William Owsley of Brecon, with notes on rents, taxes and local events and history, 1679-1768; fragment of an antiphonal, [15th century]; a copy of The Reports of Sir Henry Hobart, Lord Chief Justice of Common Pleas, 1650; and a copy of The Larvae of the British Lepidoptera and their food plants, 1880.

Records of Messrs David and David, comprising records of valuations of properties in South Wales and the adjoining counties of England made during the period 1846-1933, including Breconshire, 1872-1912; Carmarthenshire, 1865-1884; Glamorgan, 1846-1926; Monmouthshire, 1867-1933; Gloucestershire, 1875-1880; Herefordshire, 1874-1881; and Somerset, 1876-1885. The records include surveys, reports, valuations, correspondence, notes, plans, valuation schedules, sale notices and copy agreements. Many of the records reflect the industrial and urban development of South Wales and quite a number of the individual valuations are of land subject to compulsory purchase by railway companies and public utilities.

Records from the office of D. T. M Jones & Co., solicitors, 1775-[?1940], including office correspondence, 1775-1840, of Edward Jones senior, 1775-1820, Edward Jones junior, [c. 1790]-1840, Thomas Lewis, 1793-1800, John Jones, 1805-1852 (predominantly 1845-1848), Thomas Jones, 1860-1897, and D. T. M. Jones, 1898-1933; manuscript books, 1744-1925, including letter books, 1859-1917; depositions of witnesses, 1736-1768; deeds and records of lands in Cardiganshire, Carmarthenshire, Glamorgan, Pembrokeshire and Radnorshire, [16th century]-1949, including the estates of Dinas, Brecknockshire, 1756-1949, the Gwynne family of Glanbran and Buckland, 1679-1882, Cynghordy, Carmarthenshire, 1843-1945, Abermarlais, Carmarthenshire, 1712-1923, the Lloyd family of Briwnant, Carmarthenshire, 1544-1927, Glansevin, Carmarthenshire, 1678-1914, the Herbert Lloyd estate, Carmarthen, 1805-1884, Jones Family of Ystrad estate, Carmarthen and district, 1776-1865, and Llandeilo and district, 1785-1882, Glanyrannell estate, Carmarthenshire, 1692-1919, and Honeyborough, Pembrokeshire, 1783-1923; accounts, 1782-[?1940]; manorial records, [c. 1830]-1887; papers of Roger Jones, attorney, 1565-1867, including correspondence, [c. 1750]-1772, deeds and documents relating to the practice and estate, 1565-1867, and correspondence of Rev. John Jones, 1738-1790.

Deeds collect by J. Augusta Berry, mainly relating to properties in Glamorgan, Pembrokeshire and Carmarthenshire, 1753-1865.

Papurau'r Parch James Ednyfed Rhys (Ap Nathan), a phapurau'r unigolion canlynol a ddaeth i'w feddiant: y Parch. Evan Rees (Dyfed), Jonathan Rees (Nathan Wyn), David Watkin Jones (Dafydd Morganwg) a Thomas Jones, Trealaw. Mae papurau Ap Nathan, 1901-1959, yn cynnwys cerddi a chaneuon, ysgrifau a chyfieithiadau; papurau Dyfed, 1869-1923, yn cynnwys llythyrau, nifer ohonynt o bwysigion llenyddiaeth Cymru, 1878-1923, dyddiaduron a llyfrau poced, 1873-1896, beirniadaethau eisteddfodau, 1887-1907, nodiadau darlithoedd a phregethau, a barddoniaeth, 1869-1899; papurau Nathan Wyn, 1874-1905, yn cynnwys llythyrau, 1874-1905, cerddi ac ysgrifau, 1883-1901, torion o'r wasg ar bynciau llenyddol, 1868-1900; papurau Thomas Thomas, 1900-[c. 1935], yn cynnwys llawysgrifau ar lên gwerin ac arferion, hanes Morgannwg, 1921-1933, y Wenhwyseg, enwau lleoedd Morgannwg, [c. 1893]-1931, a thorion o'r wasg, 1900-1911; a phapurau Dafydd Morganwg, yn cynnwys ei hunangofiant. = Papers of the Rev. James Ednyfed Rhys (Ap Nathan), and papers of the following acquired by him: the Rev. Evan Rees (Dyfed), Jonathan Rees (Nathan Wyn), David Watkin Jones (Dafydd Morganwg), a poet and historian from Merthyr Tydfil, Glamorgan, and Thomas Jones, antiquary and headmaster of Trealaw school in Rhondda, Glamorgan, whose interests included local history and folklore. The papers of Ap Nathan, 1901-1959, include poems and songs, essays and translations; the papers of Dyfed, 1869-1923, include letters, many from important Welsh literary figures, 1878-1923, diaries and pocket books, 1873-1896, eisteddfod adjudications, 1887-1907, lecture notes and sermons, and poetry, 1869-1899; the papers of Nathan Wyn, 1874-1905, include letters, 1874-1905, poetry and essays, 1883-1901, newspaper cuttings of literary material, 1868-1900; the papers of Thomas Jones, 1900-[c. 1935], include manuscripts on folklore and customs, Glamorgan history, 1921-1933, the Gwentian dialect, Glamorgan place names, [c. 1893]-1931, and newspaper cuttings, 1900-1911; and the papers of Dafydd Morganwg, historian and poet, including his autobiography.

A glossary of the Welsh of Glamorgan compiled by Thomas Morgan (1850-1939), Baptist minister at Skewen.

Correspondence and research notes of Dr. A.W.L.Seaman relating to politics in Merthyr Tudful before 1914, comprising correspondence and papers relating to the biographies of three members of parliament for Merthyr Tudful (c. 1880-1914), namely William Pritchard-Morgan, Keir Hardie, and Edgar Jones (including letters from Edgar Jones, 1960-1961,) and newspaper cuttings and ephemera relating to the Merthyr Tydfil parliamentary election, January 1910.

Collection of deeds acquire by D. Gethin Williams, relating to properties in Carmarthenshire and Glamorgan, 1687-1889.

Papers collected by John Jenkins, mainly records of the manors of Neath Ultra and Cilybebyll, Glamorgan, 1632-1831; and deeds relating to Glamorgan and Brecknockshire, 1546-1933.

Title deeds and other documents of depositor's clients, 1557-1939, relating to properties in Brecknockshire, 1557-1939, in particular to the Little Bell, Brecon, 1759-1883, and to the Pant Griffith estate, Merthyr Cynog, 1705-1856; in Glamorgan, 1731-1920, including the Court Rhyd-hir estate, 1731-1920; and in Radnorshire, 1639-1800, Monmouthshire, 1756-1834, and Herefordshire, 1557-1763.