The series comprises letters, [c. 1950]-1983 containing references to performances of, and material relating to, operas and include letters from Ian Parrott and Arwel Hughes.
'Clustnodwr neu Lyfr Clustnodau Defaid', being a volume containing diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llangynog, Pennant Melangell, Llanrhaiadr ym Mochnant, Llanwddyn and Hirnant in Montgomeryshire, Llandrillo, Llanfor, Llandderfel and Llangower in Merioneth and Llangwm in Denbighshire, 1827.
Order books, 1865-1879; account books (listing revenue and expenditure, rentals and lime sales), 1850-1878; and printed material relating to brewing, 1867-1873.
Deeds relating to Glamorgan and Monmouthshire, 1528-1833, notably to the families of Morgan of Pencreeg, Monmouthshire, 1621-1679, and the Mackworth family of Neath, Glamorgan, 1724-1795.
The collection comprises: deeds and documents, 1617-1848, relating to properties in the Manor of Usk, Monmouthshire and Breconshire; and deeds and documents, 1586-1785, relating to properties in the county of Glamorgan.
Mae'r gyfres yn cynnwys Adroddiadau Blynyddol, 1942, 1975 ac 1977, Capel Tan'rallt, Llanllyfni, Sir Gaernarfon, sef y capel a fynychwyd gan deulu Mathonwy Hughes, ynghyd â dwy gyfrol yn cynnwys gwaith gan ddisgyblion Ysgol Sul yr un capel, 1865 a 1979.
Holograph manuscript music for Welsh and English vocal works, [?1950s]-1964; songs, 1918-[?1963]; orchestral works, 1939-[c. 1943]; works for wind and strings, [1930s]-1962; works for strings, including quartets, [?1920s]-[?1946]; pianoforte quintets, quartets and trios, [1920s]-1944; works for violin and pianoforte, 1920-1949; and miscellaneous works, [c. 1920]-1958.
Deeds and documents relating to property in Llanfihangel Cwmdu and Llangynidr, Brecknockshire, 1609-1924; deeds relating to lands in the parish of Cathedine, Brecknockshire, 1800-1848, and deeds relating to the parish of Trallong, Brecknockshire, 1805-1839.
Mainly manuscript and typescript notes, 1970-1987, prepared by Sir Goronwy Daniel for addresses and speeches on themes relating to the arts in Wales, together with a small quantity of related printed items and press cuttings. The file also contains notes for an address on 'Yr Ieuanc a Disgyblaeth Heddiw' delivered by Sir Goronwy at Cyfundeb Annibynwyr Penfro, 16 July 1980.
A collection of hymn-tunes made c. 1850; a short hymnal of the same period; several orchestral sketches by D. Emlyn Evans; an index to printed collections of Welsh tunes to 1893; extracts from 'Bardd Alaw''s collection; and hymn-tunes composed by D. Emlyn Evans.
Sermons written by Benjamin Jones (1756-1823), Congregational minister, Pwllheli, and preached at various places in Caernarvonshire, Anglesey, etc.; poems, including 'Can Sion Llywelin ar y chwain y Gwybed ar Clêr', 'Can ar yr Athrawon sy'n mynd allan ir Byd', and 'Annerch caredigol im Brodyr sydd yn mynd dan enw Methodist'; 'Catalogue of Books at Abergavenny and Elsewhere'; etc.
