Gohebiaeth Dewi Watkin Powell correspondence: Tryweryn,
- NLW Facs 1015.
- file
- [2006].
Llungopïau o ohebiaeth, 1956-1957, y Barnwr Dewi Watkin Powell ac E. M. Watkin Jones, ysgrifenyddes Pwyllgor Amddiffyn Capel Celyn, yn ymweud â’r ymgyrch yn erbyn boddi Cwm Tryweryn, gan gynnwys rhestr o gynghorau cefnogol, cefnogwyr eraill ac eglwysi ac achosion crefyddol . = Photocopies of the correspondence, 1956-1957, of Judge Dewi Watkin Powell and E. M. Watkin Jones, secretary of the Capel Celyn Defence Committee, relating to the campaign against drowning the Tryweryn Valley, including a list of supportive councils, other supporters and churches and religious causes.
Powell, Dewi Watkin