A memorandum book by John Watkins, Tre'rddol, Corwen, containing prose, poetry and accounts, including 'sylwadau ar yr Angenrheidrwydd am Ymfydeth ar y Cymru'; 'Darlith ar Ddiwygiad Gwladol, 1865'; copies of letters addressed to Yr Herald on political questions, 1867-1868; a letter to Braich y Cafn quarrymen; an address upon the coming of age of the Honourable C. H. Wynn, Rûg; 'Galargan i Robert Jones, y Gro, Bettws Gwerfyl Goch'; '4 pennill i Afon Alwen, 1865'; notes of sermons preached at 'cymanfa Bethel', 1866; 'Anerchiad i'r flwyddyn 1868'; a list of church members and their attendance, 1867; accounts of mutton sold, 1867; and a particular of Ty ucha farm.

The tune book of John Lewis, 1857, containing hymn-tunes and anthems copied from several English and Welsh printed sources and from unpublished manuscripts, e.g. the tune 'Bryncleifion', which was awarded a prize at the Mallwyd Music Competition, 1857, from the original manuscript by the author, D[avid] Jones ('Dewi Wyllt'), Mallwyd, and tunes from a manuscript in the possession of William Pugh, Rhydgaled Isaf, Harlech, 1817, 'Llyfr Robert Jones, Ffridd, Harlech, 1848', 'Llyfr John Owen, Glanymor, Harlech', 'MSS. Thomas Jenkins, Corn, Llanychaiarn, 1881'; with notes on authorship and sources by David Lewis. The following note is written at the head of the copy of the anthem 'Dyn a aned o wraig': 'Sef anthem a gyfansoddwyd ar yr achlysur o farwolaeth R. R. Parry, Frondeg, gan Robert Davies (Asaph Llechid) yr hwn a laddwyd yn chwarel Cae-braich-y-cafn, dydd Sadwrn, Awst 28, 1858. A chanwyd yr anthem yn angladd yr Awdwr'.

Transcripts of resolutions of confidence in William John Parry passed at various meetings of the North Wales Quarrymen's Union, 1876-1890; Cae Braich y Cafn strike relief lists, 1896-1897; and a draft balance sheet of contributions and of money raised by choirs, 1897.