- 1891/8Ic.
- Ffeil
- [c.1891].
Rhan oEisteddfod Genedlaethol Cymru - cyfansoddiadau a beirniadaethau
J. T. Robson a John Roberts ar 'The Mineral Resources of the Western District of South Wales, of which Swansea is the natural outlet, and the best means of their development. Saesneg/English.