- NLW Facs 374/34.
- File
- [1979x1997].
Llungopïau o ychwanegiadau a chywiriadau gan Miss Gwladys Jones, Tregaron, i waith Evan Jones ('Ap Odwyn'), Cymdogaeth Soar-y-Mynydd (Abertawe, 1979). = Photocopies of additions and corrections by Miss Gwladys Jones, Tregaron, to Evan Jones ('Ap Odwyn'), Cymdogaeth Soar-y-Mynydd (Swansea, 1979).