- A1/16.
- Ffeil
- 1984.
Rhan oKyffin Williams Archive
Includes letters from R. Geraint Gruffydd (2), Hugo Boothby, Dafydd Elis Thomas, Bernard Dunstan (2, including a Christmas card with original drawing), Lloyd Kenyon, Brian Flowers (3), Noel Cusa, Keith Grant, Stephen Rees Jones, R. Charles Evans, Fred Uhlman, John Ward, and Roger de Grey.