UK Ministry of Defence, ‘DEF Stan, Annex A, Allocation of Security Codes, Fields 1 and 2.’ No date. Tags: Ainslie Archive Ainslie Archive Box 3 Classified information Ministry of Defence United Kingdom
US Government, Los Alamos National Laboratory, Security, ‘UK-USA Classification Equivalency Table.’ 14 September 2004. Tags: Ainslie Archive Ainslie Archive Box 3 Classified information Los Alamos United States
