- LL3-4.
- Ffeil
- 1938-1959.
LL3: 'Report to the Council by the Sub-committee appointed to consider the project of a Dictionary of National Biography for Wales', Mehefin 1938. Teipysgrif. 4 tt. LL4: Rhaglen cyfarfod cyhoeddi Y Bywgraffiadur Cymreig / The Dictionary of Welsh Biography, 19 Mehefin, 1959; ynghyd â deunydd perthynol arall.