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'.

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].

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).

The music tune book of Griffith Edwards, Rhydymain, Merioneth, 1846, containing copies of anthems by D[avid] J[enkin] [Dafydd Siencyn] Morgan, J[ohn] Ambrose Lloyd, Edward Stephen Jones ['Tanymarian'] and Ellis Roberts; anthems on temperance and scriptural topics; hymn tunes by R[ichard] Mills ['Rhydderch Hael'], T. Jones, R[osser] Beynon ['Asaph Glan Tâf'], John David Edwards, R. Williams and others; carols, glees and songs, including 'Ymddiddan rhwng Bardd a Henwr', 'Plygeingan Owen Alaw yn Eisteddfod Caernarvon, 1862', 'Cân Plant y Morwr', 'Ymson Myfanwy', 'Blottun Du', 'Bryniau fy Ngwlad', 'Y Mud a'r Byddar', 'Y Dderwen' and 'Y Blodeuyn Olaf'.

A holograph score of a carol entitled 'Tawel nos' by Geraint Lewis.

A fragment of four pages, numbered 171-4, containing poems by Thomas Edward, 1724, 'Tri phenill' by Catherine Rober[t]s, 'Carol y Gwilie' by 'Mr Edd. Wynne ficar ... Gwyddelwern', 1725, and 'Galarnad am y parchedig Evan Jones o Ben[craig]...' by Ellis Cadwalader.

'Carolau', 'cerddi', 'cywyddau', and a few 'englynion', most of them transcribed by John Beans. Among the poets represented are Huw Morus, Edward Morus, Ellis Cadwaladr, Edward Samuel, Robert Hwmffres, Dafydd Morus, Gruffudd Edward, Mathew Owen, Robert Sion Owen, Ellis Rowland, Edward Rowland, William Roberts, Jonathan Hughes, William Thomas, Richard Abraham, Cadwaladr Roberts, Ned Lloyd ('o'r Bala'), Thomas William, Evan Thomas, Ellis Roberts, Arthur Jones ('o Langadwaladr'), John Jones, John Parry, Dafydd Puw Rowland, John Hughes, Ellis Roberts ('Elis y Cowper'), Morus Roberts, John Evans, Ellis ab Ellis, Thomas Jones, Derwas Griffiths, Rowland Hughes, Sion Hwmffre, Hugh Jones (Llangwm), John Cadwaladr ('o'r Bala gunt and ynawr athraw ysgol yn Llangwm'), - Lewis ('curad Cerrig y Drudion'), Lewis Morris ('Llewelyn Ddu o Fôn), Sion Tudur, Wiliam Phylip, John Davies ('Sion Dafydd Las'), Maredudd ap Rhys, etc.