- 1417D.
- Ffeil
- [1911].
Rhan oCwrtmawr manuscripts
Letts' maps of South East Wales and of North East Wales; ordnance survey maps of South West Wales and of North West Wales, 1911; and a rough plan of a mine near Marchnant River, Cardiganshire.
Lead mines and mining -- Wales -- Pontrhydfendigaid
Tacsonomeg
Cod
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Lead mines and mining -- Wales -- Pontrhydfendigaid
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Lead mines and mining -- Wales -- Pontrhydfendigaid
Termau cysylltiedig
Lead mines and mining -- Wales -- Pontrhydfendigaid
1 Disgrifiad archifol canlyniad ar gyfer Lead mines and mining -- Wales -- Pontrhydfendigaid
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