Source and copyright
Source: The National Archives of the UK (TNA). Foreign Office, Western Organisations and Co-ordination Department and Foreign and Commonwealth Office, Western Organisations Department: Registered Files (W and WD Series). WESTERN EUROPEAN UNION (WEU). Relations with NATO. 01/01/1967-31/12/1968, FCO 41/267 (Former Reference Dep: WU 4/3/1 PART B).
Copyright: (c) The National Archives of the United Kingdom