Ffyrdd a thrafnidiaeth/Roads and transport Add to clipboard P1/49 File 1971-1974 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,
Ffyrdd a thrafnidiaeth/Roads and transport Add to clipboard P1/50 File 1975 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,
Ffyrdd a thrafnidiaeth/Roads and transport Add to clipboard P1/52 File 1977 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,
Ffyrdd a thrafnidiaeth/Roads and transport Add to clipboard P1/51 File 1976 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers,