- NLW MS 930C
- Ffeil
- [1841] x [1875]
'An Essay on the Origin and History of the Bardic Alphabet', with letters, press cuttings and printed material relating to the same subject. See Archaeologia Cambrensis, 1872, pp. 181-210.
'An Essay on the Origin and History of the Bardic Alphabet', with letters, press cuttings and printed material relating to the same subject. See Archaeologia Cambrensis, 1872, pp. 181-210.