A miscellany containing a metrical dissertation on Psalm 8, verses 3 and 4, followed by a poem dealing with the seven planets; 'Darlleniad diwiol'; 'Carol i Fair', beginning 'Yngwledydd Judea yr oedd Zackaria'; a part of a carol by Mathe[w] Owen; a 'cywydd', a 'dyri', and a carol by Huw Morus; a 'dyri' by Edwart Rolant ('o'r bala'); 'Erapater dros byth a gaed o lyfr Thomas Jones ... 1701'; farm notes for 1702; etc. -- Much of the volume is in the hand of Richard Roberts, whose name, with the date 'Mai 21, 1699', appears on one folio. At the end of the manuscript is the note: - 'Llyfr y coch o Hergist yn y glasgoed y mae ef'.

Copi llawysgrif, [18 gan., hwyr] (dyfrnod 'Afonwen Mill'), o bedwar pennill olaf cerdd anhysbys, gyda'r pennill cyntaf ar glawr yn cychwyn 'Mae'n ddyled i ninnau mewn goleu yn ddi gyd'. Mae'r pennill olaf yn dweud i'r gerdd gael ei chyfansoddi ym 1781. = A manuscript copy, [late 18 cent.] ('Afonwen Mill' watermark), of the final four verses of an anonymous poem, the first extant verse beginning 'Mae'n ddyled i ninnau mewn goleu yn ddi gyd'. The final verse gives the year of its composition as 1781.

Copi, dyddiedig 19 Rhagfyr 1853, o Garol Nadolig (1785) gan David Rhys, Llanbrynmair (neu o bosib ei frawd, Thomas), wedi ei ddiwygio gan, ac yn llaw, Evan Breece (Ieuan Cadfan). = A copy, dated 19 December 1853, of a Christmas Carol (1785) by David Rhys of Llanbrynmair (or possibly his brother, Thomas), revised by, and in the hand of, E[van] Breece (Ieuan Cadfan).

A collection of hymn-tunes, anthems, chants, carols and other songs made by David Lewis, 1845, including hymn-tunes by the compiler, by J. Hughes, Alltlwyd and G. Griffiths, Aberafon; and two waltzes: 'Morgiana in Spain' and 'The King of Rome'.

The tune book of Lewis Lewis, tailor, Llanrhystyd, 1836, containing hymn-tunes, anthems, carols and songs by David Jenkin [Dafydd Siencyn] Morgan, Llechryd, Thomas Price, Llandrygarn, John Edwards, Llangadog, Hugh Hughes, Llanbabo, William Owen, Glanhafren, W. Williams, Abertawe, Robert Owen Roberts, 'awrleisydd, Llangefni', D. Lewis, Bola haul, John Jeffreys, J[ohn] Davies, Godre y Parc [Tre-boeth], T[homas] Price, Llanfair[-ym]-Muallt, John Parry, Newmarket, George Lewis, Caerfyrddin, Thomas Jenkins, Corn, Blaenplwyf, the Reverend John D[avid] Edwards, Penderlwyn, Phillip Davies, Llanfyrnach, W. Pugh, Liverpool, T[homas] Price, Crughywel, David James, Brynberian, Thomas Phillips, Bont-newydd-ar-Wy, John Ambrose Lloyd, Richard Mills ['Rhydderch Hael'], Evan Jones, Nantygwynfan and others; hymns; 'Cynghor Tad i'w Fab' by Jenkin Thomas; and notes on authorship and sources by David Lewis.

Miscellaneous letters, 1913-1934, mostly addressed to Philip Thomas, relating mainly to his involvement in local eisteddfodau and musical events. Included are letters and papers relating to Neath Harmonic Society, 1926 (ff. 34-36), and the 1933 Welsh Calvinistic Methodist Parliamentary Bill, 1931 (ff. 47-9); verses relating to the Mari Lwyd (f. 1); a printed programme of service for Central Church, Chicago, 1922 (ff. 11-13); Thomas's adjudication for the choral competition at the Swansea National Eisteddfod, 1926 (ff. 37-41); a printed leaflet for Haslemere Music Festival, 1934 (ff. 60-61); and the tune and words of a Welsh Christmas Carol (f. 53) and of a Welsh folk-song (ff. 64-66).

A collection, by Thomas Jones, of anthems taken from psalms, choruses from Handel fitted with Welsh words, a carol ('Clywch lu'r nef'), and anthem by William Owen, Cil Melyn [Prysgol] ('Cwymp Babilon'), and temperance songs.

A copy by Thomas Jones [Llanfaethlu] of two stanzas of the carol 'Yn nghanol Wlad Judea Dlos' [sic].

A tune book containing hymn-tunes, 'carolau', etc.

Emyn-donau gan William James yn bennaf, [1904]-[1960], gan gynnwys 'Pen yr yrfa' a Gogoniant i Dduw-Tangnefedd i ddynion sef carol Nadolig wedi'i hargraffu. Bu'n godwr canu yn eglwys y Methodistiad Calfinaidd yn Salem, Aberystwyth, a chyfansoddodd nifer o emyn-donau i'r eglwys, ynghyd â llyfr yn dwyn y teitl ''Tônau arbenig'. Credir fod y llawysgrifau'n perthyn i organydd yr eglwys.

Llawysgrif, 1852, yn llaw David Jones (Ieuan Cadfan) yn cynnwys carolau plygain gan Thomas Williams (Eos Gwynfa), cyfansoddwyd 1834 (ff. 1-4), a Hugh Jones, Llanddeiniolen (ff. 5-6 verso). = Manuscript, 1852, in the hand of David Jones (Ieuan Cadfan), containing carols by Thomas Williams (Eos Gwynfa), composed 1834 (ff. 1-4), and Hugh Jones, Llanddeiniolen (ff. 5-6 verso).
Cyhoeddwyd carol Hugh Jones yn ei gyfrol Turturiolen; neu, Garolau Nadolig (Caernarfon, 1836), tt. 11-14. = Hugh Jones's carol was published in his Turturiolen; neu, Garolau Nadolig (Caernarfon, 1836), pp. 11-14.

Manuscript score of the old Welsh carol 'Trymder' (words, Robert Davies (Bardd Nantglyn)), arranged for unaccompanied mixed voices. Published Magor: Mansel Thomas Trust, Ref: MT087 [1998?].

Manuscript score, alto choral part and orchestral parts of 'Ar gyfer heddiw'r bore = For this early morn: an Anglesey carol for all seasons' (English translation, Illtyd Lewis), arranged for mixed voices with piano at Treadam, February 1973. Published Magor: Mansel Thomas Trust, Ref: MT056 [1998?].

Manuscript score of an arrangement of 'Ar gyfer heddiw'r bore = For this early morn' (Welsh words, traditional; English words, Illtyd Lewis) for solo voice and piano. Published Magor: Mansel Thomas Trust, Ref: MT037 [1998?].

Manuscript orchestral score of 'Henffych Fab = The Holy Child' (words, Aneirin Talfan Davies), together with orchestral parts in B♭ major and B major, one score cover and individual parts for alto, soprano, tenor (photocopy) and bass voices. Published as 'The Holy Child' for unison voices and piano by Novello & Co. Ltd, 1962, and by the Mansel Thomas Trust, Ref: MT094 [1998?].

Miscellaneous poems, including a 'pryddest' on 'Saccheus ar ben y Sycamorwydden' written for an eisteddfod at Tredegar, 1870; a 'Carol Plygain' and a 'Carol Pasg'; various poems - some of them in the autograph of 'Nefydd' - by 'Giraldus' (Haverfordwest), William Rees ('Gwilym Hiraethog'), Robert Williams ('Robert ap Gwilym Ddu'), 'Gwyliedydd Gwent', William Jones ('Gwilym Ilid'), John Blackwell ('Alun'), etc.; 'Trioedd yr Offeiriad'; and hymns by J. M. Thomas.

Transcripts, mainly by Richard Lloyd, minister of the Welsh Calvinistic Methodists at 'Beamaris' about 1818, of cywyddau, englynion, odes, and carols by John Roberts (Sion Lleyn) and Rhisiart William Dafydd, and transcripts of letters to Richard Lloyd relating to Welsh Calvinistic Methodist affairs in Anglesey, 1828-1834.

Ink piano score (undated and without text) of a carol for two voices and piano; and a pencil and ink sketch (dated 3. 12. 51, with Welsh words).

'Diferyn Difyrrwch neu ganiadau plygeiniol er coffadwriaeth am ymddangosiad Duw yn y cnawd', being a collection made by G. C. Griffith of 'englynion', 'carolau', and other poems by Robert Hughes (Neuadd y blawd), William Griffith ('Gwilym ab Gryffydd', 1794), John Thomas (Pentrefoelas, 1800), David Owen ('Dewi Wyn o Eifionydd'), G. C. Gryffydd (1816), and Richard Jones (Trefdraeth).