- A1/15.
- Ffeil
- 1983.
Rhan oKyffin Williams Archive
Includes letters from Henry Paget (Marquess of Anglesey, 3), Gwilym O. Williams, David Brown, Charles Wynne Finch, Peter Greenham, Derec Llwyd Morgan, Alistair Crawford, R. Geraint Gruffydd (3), Eiluned Rees, John Ormond (2), Alun Talfan Davies (2), Dafydd Wigley, Wyn Roberts, Richard Eurich, James Nicholas (englyn, 'Yn y Stabl'), Alwina H. Thomas, Luned Roberts de González, Tegai Roberts, Peter Wakefield, and Anna Haycraft.