Monmouthshire place names, &c.,
- NLW MS 3606E.
- Ffeil
- [1885x1915].
Rhan oLleufer Thomas MSS,
Notes on Monmouthshire and other place names mainly in the form of replies to queries sent by Daniel Lleufer Thomas, together with letters to him on the same subject from Sir Joseph Bradney, Llywarch Reynolds, T. Wilkes of the Ordnance Survey and James G. Wood, Lincoln's Inn.