Papers of Dr William Thomas, Ychwanegu i'r clipfwrdd 1-15. Is-fonds 1911-1981. Rhan oDr William Thomas (Penally) Papers,
Papers Of Magdalen Morgan, Ychwanegu i'r clipfwrdd 16-27. Is-fonds [1920]-1970. Rhan oDr William Thomas (Penally) Papers,