Welsh Omnibus Survey Add to clipboard A1/6 File 1987-1989 Part of Institute of Welsh Affairs Records,
Wales 2010: Transport and Communications Add to clipboard R3/12 File 1993 Part of Institute of Welsh Affairs Records,
Swyddfa Gymreig: ffyrdd/the Welsh Office: roads Add to clipboard P1/78 File 1978-1979 Part of Papurau Gwynfor Evans/Gwynfor Evans Papers, Great Britain. Welsh Office