- A1/4.
- Ffeil
- 1968, Jan.- April.
Rhan oJohn Morris Papers,
Includes letters from Barbara Castle, Tam Dalyell, Professor D. J. Llewelfryn Davies, Gwyneth Dunwoody, T. I. Ellis, James Griffiths, Cledwyn Hughes, Ben G. Jones (2), Gwilym R. Jones, D. Elystan Morgan, Peter Shore, George Thomas and Eirene White (3).
Castle, Barbara, 1910-