Part of J. T. Jones Manuscripts
Three volumes of letters addressed mainly to J. T. Jones at Carmarthen and Aberdare, most of them from purchasers or distributors of Y Gwron Cymreig, Geiriadur Bywgraffyddol o Enwogion Cymru, etc.
Part of J. T. Jones Manuscripts
Three volumes containing sermons by J. T. Jones.
Part of J. T. Jones Manuscripts
Three volumes of sermons by J. T. Jones and others, many of them in shorthand.
Part of J. T. Jones Manuscripts
Miscellaneous papers of J. T. Jones, including notes for sermons and addresses, drafts of letters, etc.
Part of J. T. Jones Manuscripts
Original material, including poetry, letters, adjudications, etc., sent for publication, mainly in Tarian y Gweithiwr.
Part of J. T. Jones Manuscripts
A register of advertisements received for inclusion in the Aberdare Times, 1876-1902.
Part of J. T. Jones Manuscripts
Miscellaneous account books mainly dealing with Y Gwron Cymreig and other works printed by J. T. Jones.
Part of J. T. Jones Manuscripts
Printing and publishing account books kept by J. T. Jones, including cash books, lists of subscribers to various publications, lists of advertisements, etc.
Part of J. T. Jones Manuscripts
Account books containing lists of purchasers of publications, lists of subscribers to, and distributors of, periodicals, etc.