These papers provide a very full and extensive record of the political and public career of Lady Tweedsmuir, particularly of Scottish politics from 1945 to 1974, and of foreign policy in the early 1970s in her areas of responsibility as Minister of State, for example, the 'Cod War' dispute with Iceland. Business papers include some relating to her directorship of the transatlantic Cunard Line, and the construction and launching of RMS ‘Queen Elizabeth 2’. Some papers of Lord Tweedsmuir, relating to their joint activities, are also included in this collection.