August 2015 Donation Ychwanegu i'r clipfwrdd C Is-fonds 1911-2011 Rhan oIan and Thalia Campbell Papers,
1998 Deposit (C1998/12), Ychwanegu i'r clipfwrdd 1998 DEPOSIT. Is-fonds [c.1980s]-[1990s]. Rhan oIan and Thalia Campbell Papers,
1989 Deposit (C1989/52), Ychwanegu i'r clipfwrdd 1989 DEPOSIT. Is-fonds 1958-1990. Rhan oIan and Thalia Campbell Papers,