The M61 motorway, Ychwanegu i'r clipfwrdd M2/5/7. Ffeil [c. 1963]. Rhan oSir Clough Williams-Ellis Papers, Photocopies of landscape photographs of the M61, the Manchester - Preston motorway, [c. 1963].
The M6, M61 and M62 motorways, Ychwanegu i'r clipfwrdd M2/4/4. Ffeil [1959]-[1967]. Rhan oSir Clough Williams-Ellis Papers,