A volume entitled 'Y Gôg Lawen. Neu Lyfr Carolau a Cherddi Cywyddau ac Awdlau. Duwiol a Diddanol', being an incomplete collection, in two parts, compiled in 1802, of holograph poetry in free and strict metres by Dafydd Jones otherwise Dafydd John James ('Dafydd Siôn Siams' or 'Dafydd ab Ioan') of Penrhyndeudraeth.
A letter, 1896, from David Watkin Jones ('Dafydd Morganwg') to John Daniel Evans with transcripts of unpublished poems by Thomas Evans ('Telynog'); a postcard, 1902, from William Jones, M.P., to J. D. Evans at Goginan, Cardiganshire; an unsigned letter, 1900, containing a brief history of the Baptists in Goginan and district; and a hymn-tune entitled 'Goginan' by William Aubrey Williams ('Gwilym Gwent'), 1869.
A pocket book belonging to William Thomas, Ty'ngadfan, Llanwnda (d. 1892), containing an incomplete metrical dialogue on temperance by Owen Griffith Owen, Bryncrin; 'Cwynfan gwraig meddwyn' (unsigned); an incomplete carol by Robert Jones, Bryn-y-gro; 'Cân ar ddull o ymdiddan rhwng Dyn a Llyffaint'; names of subscribers to Athraw Cerddorol and towards a Welsh oratorio; notes of sermons preached at associations held at Llangefni, Caernarvon, and Pwllheli, 1857-60; and a table of a Dinorwic quarryman's earnings, 1851-60.