Historic Buildings Council for Wales Ychwanegu i'r clipfwrdd S3/30 Ffeil 1959-1961 Rhan oLord Goronwy-Roberts Papers
Wales's Heritage Industry Ychwanegu i'r clipfwrdd G/6 Ffeil 1998-1999 Rhan oInstitute of Welsh Affairs Records,
Historic Buildings Council for Wales Ychwanegu i'r clipfwrdd S3/25 Ffeil 1956-1960 Rhan oLord Goronwy-Roberts Papers
Historic buildings in Wales Ychwanegu i'r clipfwrdd S3/27 Ffeil 1956-1970 Rhan oLord Goronwy-Roberts Papers