Llythyrau at T. Mordaf Pierce,
- NLW MS 6183C.
- Ffeil
- 1913-1914.
Rhan oFrondirion Manuscripts,
Letters, 1913-1914, to T. Mordaf Pierce from Sir Thomas Marchant Williams, Edward Griffith, Dolgellau, Thomas Gwynn Jones, Aberystwyth, and Edward D. Snyder, Harvard University, relating to Pierce’s essay on William Owen[-Pughe] (see NLW MS 6184D).