German Democratic Republic
Ministry of State Security
1955
- Protocol on the agreement between the Ministry of the Interior of the Czechoslovak Republic (ČSR) and the State Secretariat for State Security, concluded at the meetings in Berlin held on July 6-7, 1955
1958
- Protocol on negotiations of delegations of the Ministry of the Interior of the Czechoslovak Republic (ČSR) and the Ministry of State Security of the German Democratic Republic (NDR) on the deepening of operative cooperation, Prague, March 19-21, 1958
1962
- Agreement between authorized representatives of the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and authorized representatives of the Ministry of State Security of the NDR on the exchange of patients for therapeutic visits, 4/15/1962
1965
- Agreement on further development of operative cooperation between the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, November 22-26, 1965
1966
- Agreement between the Ministry of State Security of the German Democratic Republic (NDR) and the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) on the exchange of the ill, 1966
1971
- Protocol on the planning, conducting and financial modification of joint cooperation between respective constituents of the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, March 9-10, 1971
- Protocol on negotiations between delegations of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and delegations of the Ministry of State Security of the German Democratic Republic (NDR), Prague, May 4-6, 1971
- Protocol on negotiations between delegations of the Ministry of State Security of the German Democratic Republic (NDR) and the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR), June 30-July 3, 1971
1972
- Protocol from negotiations of radiocounterintelligence/radiointelligence delegations of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and special radioservices of the Ministry of State Security of the German Democratic Republic (NDR), March 6-9, 1972 in Prague
- Minutes from negotations of leading operative technical services staffers of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), held in Berlin on October 26-28, 1972
- Protocol on negotiations concerning the reciprocal exchange of recreation in the year 1973 between the Ministry of State Security of the German Democratic Republic (NDR) and the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR), Prague, November 7-9, 1972
- Agreement on operative technical services of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR) on the reciprocal supply of special technology and the settling of their accounts, November 13, 1972
- Minutes from negotiations of radiocounterintelligence/radiointelligence delegations of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and special radio services of the Ministry of State Security of the German Democratic Republic (NDR), held on December 4-8, 1972 in Berlin
- Vollmacht der Minister für Staatssicherheit der Deutschen Demokratischen Republik, Berlín, December 28, 1972
- Minutes from the negotiations of delegates of the Ministry of State Security of the German Democratic Republic (NDR) and the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) concerning vacationers’ exchanges for the year 1973, Prague, November 7-9, 1972
- Protocol between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR) on the exchange of medical treatment abroad for the year 1973, Prague, November 8, 1972
1973
- Protocol on negotations concerning the reciprocal exchange of vacationers in the year 1974 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Bratislava, October 10, 1973
- Agreement on the reciprocal handling of conspiratorial apartments used by reperesentatives of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) in Berlin and representatives of the Ministry of State Security of the German Democratic Republic (NDR) in Prague, Prague, October 19, 1973
- Minutes from the negotiations of delegates of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR) concerning vacationers’ exchanges for the year 1974, Berlin, October 29-31, 1973
- Protocol on negotiations concerning reciprocal recreation exchange in the year 1974 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, October 29-31, 1973
1974
- Protocol on negotiations concerning reciprocal recreation exchange in the year 1975 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Prague, October 22-23, 1974
- Minutes on negotations of representatives of operative technical services of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), held in Prague on October 28-November 1, 1974
1975
- Protocol on negotiations concerning reciprocal recreation exchange in the year 1976 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, December 8-10, 1975
- Protocol modifying reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR), Karlovy Vary, September 28-October 2, 1975
1976
- Protocol modifying reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR), Prague, November 1, 1976
- Protocol modifying reciprocal spa treatment exchange between the health directorate of of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR), Prague, November 8-9, 1976
- Protocol on negotations concerning reciprocal recreation exchange in the year 1977 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Prague, November 24, 1976
1977
- Agreement on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Prague, March 9, 1977
- Protocol modifying reciprocal spa treatment exchange between the health directorate of of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR), Berlin, November 1-3, 1977
- Protocol on negotations concerning reciprocal recreation exchange in the year 1978 by the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, November 22-24, 1977
- Protocol on organizing the delivery/receipt of citizens of the Czechoslovak Socialist Republic (ČSSR) and German Democratic Republic (NDR) who committed criminal acts falling into the objective competence of a state security investigator, Prague, November 24, 1977
- Protocol on cooperation between investigating organs of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the the Ministry of State Security of the German Democratic Republic (NDR), Prague, November 24, 1977
1978
- Protocol on negotiations of operative-technical services delegates of the Ministry of State Security of the German Democratic Republic (NDR) and the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR), Prague, November 20-26, 1978
- Protocol on negotiations concerning reciprocal recreation exchange in the year 1979 by the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the the Ministry of State Security of the German Democratic Republic (NDR), Prague, September 18-20, 1978
- Protocol modifying reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR), Oberwiesenthal, November 22, 1978
1979
- Plan for cooperation, mutual support and coordination between Directorate X of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and Directorate XX of the Ministry of State Security of the German Democratic Republic (NDR) for the years 1979 and 1980, valid as of February 14, 1979
- Agreement on fundamentals for carrying out joint passport and customs inspections on the borders between the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR), Prague, January 5, 1979
- Agreement between the Minister of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Minister of State Security of the German Democratic Republic (NDR) on reciprocal collaboration and cooperation of State Security investigation bodies
- Protocol on reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR) for the years 1980-1981, Karlovy Vary, October 26, 1979
- Protocol on negotations concerning reciprocal exchange recreation in the year 1980 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the the Ministry of State Security of the German Democratic Republic (NDR), Cínovec, November 21, 1979
1980
- Protocol on collaboration and cooperation between the Intelligence Directorate of the Main Border Guard and State Border Protection Services Directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Main Directorate VI of the Ministry of State Security of the German Democratic Republic (NDR) in the counterintelligence safeguarding of border crossings and cross-border traffic between both states
- Protocol on negotiations concerning reciprocal recreation exchange in the year 1981 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the the Ministry of State Security of the German Democratic Republic (NDR), Prague, October 13-15, 1980
1981
- Protocol on collaboration and cooperation between Directorate IX of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Agitation Section of the Ministry of State Security of the German Democratic Republic (NDR) in the realization of publication measures towards the prevention of the enemy activity of criminal trafficking organizations, attacks on state borders and their detection, 1981
1982
- Protocol record on the “Protocol on organizing the delivery/receipt of citizens of the German Democratic Republic (NDR) and Czechoslovak Socialist Republic (ČSSR) who committed criminal acts while members of State Security bodies,” from December 24, 1977, Prague, December 2, 1982
1983
- Plan for cooperation and reciprocal collaboration between Directorate II of the National Security Corps of the Czechoslovak Socialist Republic (ČSSR) and Main Directorate II of the Ministry of State Security of the German Democratic Republic (NDR) for the period 1982-1985, Prague, January 6, 1983; Berlin, January 17, 1983
1984
- Plan for cooperation and reciprocal collaboration between Directorate XI of the National Security Corps of the Czechoslovak Socialist Republic (ČSSR) and the Main Directorate of the Ministry of State Security of the German Democratic Republic (NDR) for the years 1984-1986
- Protocol on cooperation between Directorate VI of the National Security Corps of the Czechoslovak Socialist Republic (ČSSR) and the 26th independent section of the Ministry of State Security of the German Democratic Republic (NDR), November 24, 1984
1985
- Agreement between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR) on reciprocal cooperation in material technical safeguarding and on accounting for financial commitments, January 16, 1985
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR) in the area of political-operative securing of armed forces for the years 1986-1990, Prague, November 8, 1985
1986
- Protocol on collaboration and cooperation between Directorate VI (XIII) of the National Security Corps of the Czechoslovak Socialist Republic (ČSSR) and Special radioservices of the Ministry of State Security of the German Democratic Republic (NDR) in the area of radiointelligence services for the years 1986-1990, Prague, February 28, 1986; Berlin, March 26, 1986
- Plan for cooperation between the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR) in the area of correspondence screening for the years 1986-1990, Prague, May 21, 1986; Berlin, May 30, 1986
- Plan for collaboration and cooperation between Directorate X of the National Security Corps of the ČSSR and Directorate XX of the Ministry of State Security of the German Democratic Republic (NDR) for the years 1986-1990, Prague, December 18, 1986; Berlin, December 20, 1986
1987
- Protocol on reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of State Security of the German Democratic Republic (NDR) for the years 1988-1989, Berlin, November 2-4, 1987
1988
- Agreement on collaboration between Directorate II of the National Security Corps of the Czechoslovak Socialist Republic (ČSSR) and Main Directorate VI and Main Directorate XIX of the Ministry of State Security of the German Democratic Republic (NDR) on the protection of civilian air transport in the face of unlawful acts, Prague, October 31, 1988
Ministry of the Interior of the German Democratic Republic
1967
- Protocol on negotiations between delegations of the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and delegations of the Ministry of the Interior of the German Democratic Republic (NDR), held May 22-26, 1967 in Prague
- Agreement between the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) on conditions for the exchange of spa or recreational visits of servicemen, Berlin, April 10, 1967
1970
- Agreement between the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR) on cooperation in the area of transport and passport, customs and other inspections in state border crossing, Prague, December 21, 1970
1971
- Protocol on negotiations of radiointelligence representatives of the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the operative-technical division of the Ministry of State Security of the German Democratic Republic (NDR), Berlin, September 20-24, 1971
- Protocol from negotiations on the reciprocal exchange of vacationers in the year 1972 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, December 13-14, 1971
- Protocol between the government of the Czechoslovak Socialist Republic (ČSSR) and the government of the German Democratic Republic (NDR) on the status of border crossings over joint state borders (entered into effect 8/5/1971)
- Zusatzprotokoll zur Vereinbarung über den Austausch von kurbedürftigen Angehörigen des Ministeriums des Innern der CSSR und des Ministeriums des Innern der DDR für das Jahr 1971, Berlin, January 19, 1971
- Protocol on negotiations between delegations of the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and delegations of the Ministry of the Interior of the German Democratic Republic (NDR), Berlin, February 9-11, 1971
- Agreement between the government of the German Democratic Republic (NDR) and the government of the Czechoslovak Socialist Republic (ČSSR) on the developing of management and upkeep of a direct international secret government telephone link between Berlin and Prague (entering into effect March 12, 1971)
- Agreement on cooperation between the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR), Prague, April 29, 1971
- Protocol on cooperation between the Ministry of the Interior of the German Democratic Republic (NDR) and the Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR), 1971
1972
- Protocol on measures towards a Cooperation Agreement between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) from April 28, 1971, for the year 1972
- Protocol on measures towards a Cooperation Agreement between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) from April 28, 1971, Praha/Berlin, January 20, 1972
- Massnahmeplan für die Organisation und Durchführung des Urlauberaustausches 1973, Prague, September 7, 1972
- Massnahmeplan für die Organisation und Durchführung des Kurpatientenaustausches für das Jahr 1973, December 14, 1972
- Agreement between the government of the Czechoslovak Socialist Republic (ČSSR) and the government of the German Democratic Republic (NDR) on the establishment and use of a secret government telephone and telegraph link, Berlin, December 28, 1972
- Rules of traffic of the government secret telephone and telegraph link between the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR), Prague, December 28, 1972
- Rules of traffic of the government secret telephone and telegraph link between the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR), Prague, December 28, 1972
1973
- Supplementary protocol from negotiations of delegates of the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Federal Ministry of the Interior of the German Democratic Republic (NDR) towards the agreement between the Ministries of the Interior of the ČSSR and the NDR on reciprocal cooperation, Prague, November 1-2, 1973
1974
- Protocol concluded on the basis of the Agreement on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR), signed on April 28, 1971 and coming into force on January 1, 1974
- Protocol from the conference of the Deputy Minister of the Interior and the Main Border representative of the Czechoslovak Socialist Republic (ČSSR) with the Deputy Minister of National Defense and the Commander of the Border Troops of the German Democratic Republic (NDR), held on June 18-19, 1974 in Prague
- Protocol on the organizing and carrying out of recreation exchange of both forms in the year 1975 between the Ministry of the Interior of the German Democratic Republic (NDR) and the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR), Prague, June 19-21, 1974
- Protocol modifying the mutual exchange of courier packages between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Prague, November 6, 1974
- Protocol on perspectives for political-operative cooperation in the securing of select problems of the national economy of the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR), Prague, December 10-13, 1974
1975
- Protocol on provisions in cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1975
- Protocol from the conference of border authorities of the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR) held May 20-21, 1975 in Gross Köris
- Protocol modifying reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of the Interior of the German Democratic Republic (NDR), Prague, October 15-17, 1975
- Protocol on the organizing and carrying out of both forms of exchange recreation for the period from 1976 through 1980, Berlin, October 23, 1975
1976
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) during the year 1976, valid from January 1, 1976
1977
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) during the year 1977, valid from January 1, 1977
- Protocol on the organizing and carrying out of both forms of exchange recreation during the years 1978-1980 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR), Berlin, November 9-11, 1977
- Addendum to the protocol on the organizing and carrying out of both forms of exchange recreation during the years 1978-1980 between the Ministry of the Interior of the German Democratic Republic (NDR) and the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR)
1978
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1977, valid from January 1, 1978
- Agreement on reciprocal pioneer recreation and family exchange for the year 1979 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Council of the Rostock region of the German Democratic Republic (NDR), Prague, December 11-13, 1978
1979
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1979, valid from January 1, 1979
- Agreement on reciprocal pioneer recreation and family exchange for the year 1980 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Council of the Rostock region of the German Democratic Republic (NDR), Rostock, December 3-6, 1979
- Protocol on reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of the Interior of the German Democratic Republic (NDR) for the years 1980-1981, Karlovy Vary, December 6, 1979
1980
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1980, valid from January 1, 1980
1981
- Agreement on reciprocal pioneer recreation and family exchange for the year 1981 between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Council of the Rostock region of the German Democratic Republic (NDR), Prague, January 8-10, 1981
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1981, valid from January 1, 1981
- Protocol on reciprocal spa treatment exchange between the health directorate of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of the Interior of the German Democratic Republic (NDR) for the years 1982-1983, Karlovy Vary, December 15, 1981
1982
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1982, valid from January 1, 1982
1985
- Protocol on the organizing and carrying out of both forms of exchange recreation between the Ministry of the Interior of the German Democratic Republic (NDR) and the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR), Berlin, July 8-11, 1985
1988
- Protocol on the negotiations of representatives of operative-technical services of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of State Security of the German Democratic Republic (NDR), Berlin, 9/26-29/1988
- Perspective plan for cooperation between the Main Directorate of the Border Guard and State Border Protection services of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Border Troops of the German Democratic Republic (NDR), Prague, May 16, 1988/Berlin, September 16, 1988
- Protocol on reciprocal spa treatment exchange between the directorate for the plan, budget, and social security of the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the health directorate of the Ministry of the Interior of the German Democratic Republic (NDR) for the years 1989-1990, Prague, October 3-5, 1988
1989
- Protocol on cooperation between the Federal Ministry of the Interior of the Czechoslovak Socialist Republic (ČSSR) and the Ministry of the Interior of the German Democratic Republic (NDR) for the year 1989, valid from January 1, 1989
- Agreement on rules for carrying out one-sided clearing at border crossings between the Czechoslovak Socialist Republic (ČSSR) and the German Democratic Republic (NDR) by passport control authorities of the ČSSR and NDR