Letters and copies of replies regarding invitations to Sir Clough and Amabel Williams-Ellis to official openings, lectures, the National Eisteddfod, to meet the Queen at Harlech Castle (1977), various dinners, and also concerning visits to Portmeirion and Brondanw by various parties, 1969-1977. Correspondents include Henry Anglesey, Paul Paget, and Sir Alexander Downer, high Commissioner for Australia.
Conservation: speeches, articles and letters,
Papers, newspaper cuttings, letters and copies of replies concerning various conservation issues including Snowdonia National Park, Lleyn Peninsula, the Council for the Protection of Rural Wales and the Council for the Protection of Rural England, 1955-1972. Correspondents include Lewis Mumford, Henry, Marquis of Anglesey, and Sir Frederick Gibberd.
Mumford, Lewis, 1895-
Birthday cards, telegrams, letters and thank you letters concerning Sir Clough Williams-Ellis' 90th birthday and the various celebrations; papers relating to the celebration at Portmeirion including a list of guests, the programme and invitation, photographs of the party and drafts of Sir Clough's speech, 1973; and pages from The Times, 28 May 1973. The correspondents include Henry, Marquis of Anglesey, Lord Morris of Borth-y-Gest, Robin Cooke, Jan Morris and Sir Donald Gibson.