This document provides further details of joint KGB-Bulgarian measures to counter RFE and RL. It vaunts the effectiveness of Bulgarian regime counterpropaganda, claiming that it thwarted Western efforts to create internal strife in Bulgaria.

This document from the Sixth Directorate of Bulgarian State Security thanks “Soviet comrades” for their assistance in combating hostile propaganda against Bulgaria. It acknowledges the role of State Security in publishing articles in the Bulgarian media “exposing” RFE and RL, and refers to joint Soviet-Bulgarian operations against Western radios.

This note regarding the results of the visit of a group of Interior Ministry officials to the KGB in Moscow contains a proposal to develop a coordinated plan to discredit RFE and RL.

This document details a plan for cooperation between the 6th Directorate of the Ministry of the Interior of the People’s Republic of Bulgaria and the 10th Directorate of the Federal Ministry of the Interior of the Czecho-Slovak Socialist Republic during the period 1979-1981 against foreign propaganda operations. Radio Free Europe and Radio Liberty are singled out.

A collaborator of the Bulgarian intelligence service provided detailed information on the personnel situation within the RFE Bulgarian Service.

This document provides a detailed content analysis of the programs of individual Western broadcasters. It indicates particular sensitivity to broadcasts on Helsinki-related human rights issues, to the use of recent defectors with inside knowledge, and to Radio Free Europe's focus on domestic issues.

On 5 July 1963 the Bulgarian Ministry of Internal Affairs completed an information report on NATO's activity during the Cuban Missile Crisis. In the report, the ministry outlines detailed espionage carried out by NATO agents. According to the report, the NATO Military Intelligence Services provided instructions for NATO member-states' military attaches stationed in Warsaw Pact countries and agents they could get to cooperate with them. Agents were to observe and report specific military intelligence collecting in Warsaw Pact countries -- arms deliveries, missile sites, military movements, etc. The report also includes explanation of how the attaches carried out their intelligence gathering -- reading official press, speaking in Russian and misrepresenting themselves as Russian, etc . The Bulgarian Interior Ministry notes that Western governments were well-informed of Bulgarian military structures -- including exact formations and secret designations.

Following the Cuban Missile Crisis, General Diko Dikov, the Minister of Internal Affairs, drafted a report for General Semerdzhiev covering military movements inside West Germany(Federal Republic of Germany). Dikov includes a brief description of NATO and English military mobilization along with civilian preparations influenced by propaganda during the crisis.

A report on the investigation of a political conspiracy, said to be organized by Metodiy Chavdarov, a colonel at the Sliven garrison. The arrested colonel and his accomplices allegedly conspired to overthrow the Fatherland Front government, once the Soviet troops leave the country.

A memo to the head of the People’s ''Militsiya'' with information on the on-going purges in the Bulgarian military. Purportedly pro-fascist officers have established a broad network of conspirators committed to overthrowing the Fatherland Front government.