C.N.D. (Campaign for Nuclear Disarmament) Ychwanegu i'r clipfwrdd C4/3 Ffeil = File 1985-2005 Rhan oIan and Thalia Campbell Papers,
Borth Sea Defences Ychwanegu i'r clipfwrdd C6/4 Ffeil = File 1997 Rhan oIan and Thalia Campbell Papers,
Banner making Ychwanegu i'r clipfwrdd C1/6 Ffeil = File 1985-1997 Rhan oIan and Thalia Campbell Papers,
Arts for Labour Ychwanegu i'r clipfwrdd C8/7 Ffeil = File 1985-1996 Rhan oIan and Thalia Campbell Papers,
Anti-Apartheid Ychwanegu i'r clipfwrdd C7/4 Ffeil = File 1988-2003 Rhan oIan and Thalia Campbell Papers,