Central Intelligence Agency (CIA) reports about Amateur Radio in the former Soviet Union (including the Baltic States) and Warsaw Pact member countries have been declassified to a new searchable online database, the CIA Freedom of Information Act (FOIA) Electronic Reading Room. 

Documents include translations and assessments of Amateur Radio clubs, including Soviet DOSAAF (Volunteer Society for Cooperation with the Army, Aviation, and Fleet) groups; training; monitoring Sputniks; technology and equipment, and even QSL cards.

All documents have been declassified and occasionally “sanitized” and made available to the public for the first time in this archive. Some of these documents were only available previously in a closed system at the US National Archives. — Thanks to Southgate Amateur Radio News via Andy Thomas, G0SFJ