- BJ1/4.
- Is-gyfres
- 1859-1918.
Papers relating to the running of the quarry and tramway, 1859-1918, including minute book, 1884-1902, cash book, 1874-1918, share ledger, 1892-1912, Directors' reports, 1885-1912.
Wrysgan Slate Quarry Company (Wales)
Papers relating to the running of the quarry and tramway, 1859-1918, including minute book, 1884-1902, cash book, 1874-1918, share ledger, 1892-1912, Directors' reports, 1885-1912.
Wrysgan Slate Quarry Company (Wales)