- PP6.
- Cyfres
- 1875-1927.
Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Porthmadog Liberal Club., 2 canlyniadau
- Diphwys Slate Quarry Company (Blaenau Ffestiniog, Wales), 1 canlyniadau
- Davies, Jonathan, 1857-1933., 1 canlyniadau
- Bugail Slate Company (Wales), 1 canlyniadau
- Votty and Bowydd Slate Quarries Company (Wales), 1 canlyniadau
- Wrysgan Slate Quarry Company (Wales), 1 canlyniadau
- Festiniog and Blaenau Railway., 1 canlyniadau
- Porthmadog, Beddgelert and South Snowdon Railway Company., 1 canlyniadau
- Porthmadog Harbour (Wales), 1 canlyniadau
- , 1 canlyniadau
- Pob un
- Gladstone, W. E. (William Ewart), 1809-1898, 1 canlyniadau
- Lloyd, John Edward, Sir, 1861-1947, 1 canlyniadau
- Llew Tegid, 1851-1928., 1 canlyniadau
- Davies Bros Slate Merchants, Porthmadog -- Records and correspondence., 1 canlyniadau
- Davies Bros Slate Merchants, Porthmadog., 1 canlyniadau
- Davies, Jonathan, 1857-1933 -- Archives., 1 canlyniadau
- Pob un
- Harbors -- Wales -- Porthmadog., 3 canlyniadau
- Slate industry -- Wales -- Pembrokeshire., 3 canlyniadau
- Calvinistic Methodists -- Wales, North., 1 canlyniadau
- Slate industry -- Wales -- Merioneth., 1 canlyniadau
- Slate industry -- Wales -- Caernarvonshire., 1 canlyniadau
- Temperance -- Wales, North., 1 canlyniadau
- Wales, North -- Politics and government -- 20th century, 1 canlyniadau
- Railroads -- Wales -- Caernarvonshire., 1 canlyniadau
- Railroads -- Wales -- Ffestiniog., 1 canlyniadau
- Shipbuilding -- Wales -- Porthmadog., 1 canlyniadau