The National Archives, 1953.
1. Report of the Working Party on the Security Classification of Information on Atomic Weapons; 2. Security of the Defence Teleprinter Network; 3. Security Certificates for Foreigners Attending Service Training Courses in the U.K.; 4. Compromised Documents; 5. Release of Information to the E.D.C.; 6. Breach of Security in the Transmission of Official Mail to Bulgaria; 7. Mr. R.H. Hollis, Cabinet Office.
United Kingdom.
Retrieved from
https://history-commons.net/artifacts/2545932/1/3568437/ on 04 May 2024. CID: 20.500.12592/k4f423.