A list of subscribers in Merthyr Tydfil to early issues of Y Gwron Cymreig.

The tune book of Owen Jones, Vrongain and Llwyn'rodyn, 1850-1857, containing nineteenth century hymn-tunes, anthems and glees, including a copy of an anthem composed expressly for the Annual Festival of the Merthyr Tydfil Temperance Society, 1844, by D[aniel] T[homas] Williams ['Tydfylyn'], and other temperance songs.

A typescript copy compiled by the donor John Griffiths, 2010, of sketch-maps of some farms in the parish of Merthyr Tudful.

A report by John Ballinger and a scheme for a public libraries' service for the county borough of Merthyr Tydfil, 1907.

The file comprises Wales People's March for Jobs committee minutes and planning conference, Oct. 1981, Midlands People's campaign for jobs and Merthyr peoples campaign for jobs papers.

Papers, 1849-1927, of the Simons family, including a diary of William Simons, 1849; a commonplace book, 1891, of Elsie Simons; letters, 1893, relating to the Dolgellau gold mines; probate copies of wills, 1908-1927; and an issue of The Merthyr Express, 29 April 1982, with an article on the family.

Research papers of Professor T. V. Davies, 1981-[c. 1991], into the farms and farmers of Senghenydd Supra in the parishes of Gelligaer and Merthyr Tydfil including photocopies of documents in the Public Record Office, National Library of Wales, Glamorgan County Record Office, and Gwent County Record Office; miscellaneous research notes and transcripts; draft chapters; papers relating to the Llantrisant and District Local History Society, 1981-1990; letters to T. V. Davies, [c.1984]-1990; and typescripts of his lectures to history societies, 1988-1989.