Letters of Ellis Pierce ('Elis O'r Nant'),
- 956B.
- Ffeil
- 1890-1910.
Rhan oCwrtmawr manuscripts
Sixty-six letters and postcards, 1890-1910, from Ellis Pierce ('Elis o'r Nant'), Dolyddelen to John Jones ('Myrddin Fardd') (literary matters, mention of Isaac Foulkes ('Llyfrbryf'), 'Beirdd Llyn' [Cynfeirdd Llŷn], etc.).