- A1/2.
- Ffeil
- 1970.
Rhan oKyffin Williams Archive
Includes letters from Daniel Jones (2), Glyn Ceiriog Hughes, Fred Green, Sidney C. Hutchison (5), Henry Paget (Marquess of Anglesey), Brychan Evans, Peter Thomas, William Gladstone, Ben G. Jones, Hilda Vaughan, and Gweno B. de Jones (with a typescript of an English translation of the letter).