Llythyrau at John Williams ('Ioan Madog'),
- NLW MS 6770B.
- Ffeil
- [19 cent.].
Letters, 1847-1878, some of them to John Williams ('Ioan Madog') (1812-1878), from Daniel Morris, Cork, John Jones ('Talhaiarn') (1810-1869), John Jones ('Ogwenydd') (fl. 1870-1889), H. Tudwal Davies (1847-1915), and William Owen ('Bardd Llechog'), and a copy of the programme of the 'Harlech Castle Eisteddfod and Musical Festival of Gwynedd', 14 August 1873, at which 'Ioan Madog' was an adjudicator.