Comprises the correspondence and political and Royal ephemera created and collected by Sir David Treharne Llewellyn, much of it during his time as MP for Cardiff North (1950-1959). Includes letters from Margot Asquith, Philip Noel Baker, Henry Brooke, R. A. Butler, James Callaghan, Winston Churchill, Anthony Eden, David Maxwell Fyfe, Gwilym Lloyd George, Lord Hailsham, Edward Heath, Geoffrey Howe, Douglas Hurd, Selwyn Lloyd, Harold Macmillan and George Thomas, together with a typed letter to his father, Sir David Richard Llewellyn, from David Lloyd George.