- NLW ex 1590.
- File
A typescript essay in Welsh by David Thomas, Bryn Powys, Caernarfon, relating to David Williams (b. 1785), Perthi Llwydion, p. Beddgelert, co. Caern.
A typescript essay in Welsh by David Thomas, Bryn Powys, Caernarfon, relating to David Williams (b. 1785), Perthi Llwydion, p. Beddgelert, co. Caern.