Correspondents include: Edward Heath, on White Papers and open government, 16 April 1973; Harold Wilson, on sugar, 4 November 1974; letters to Benjamin Short, on the EEC Scrutiny Committee, June-July 1979; letter to John Biffen MP, on the Single European Act, 27 February 1986; Enoch Powell MP, enclosing correspondence on the Single European Act, 12 March 1986; Margaret Thatcher, on the outcome of the Brussels Summit, 17 February 1988; Lord [James] Callaghan, on the Single European Act, 13 February 1989; letter to Neil Kinnock MP, on adding safeguards to the EEC section of the Labour policy document 'Britain in the Modern World', 19 September 1989; letter to Edward Heath MP, on Margaret Thatcher's speech to the College of Europe ['The Bruges Speech'], 21 September 1989, and Heath's reply, 10 October 1989; J. M. [Michael] Hope, on a publication entitled 'Financing the European Community', 14 March 1990; and John Major MP, on making documents on European political union publicly available to members of the House of Commons, 14 October 1991; letter to John Major, on the European Union (Public Information) Bill, 25 September 1992; and letter to Sir Nicholas Lyell MP, on the Treaty on European Union, 15 December 1992.