Slovak National Council adopted the Act on the Slovak Matica, which nationalized it, and merged its torso with Slovakia by the National Library. Slovak Matica under its brand began to fulfill only the tasks of the national library and library institute. 1958 The communist regime staged a trial against compilers preparing a lexicographic work – The National Encyclopedia – Alexander Hirner, Ján Olex, Jozef Telgárský, František Oktavec, who were sentenced to many years in prison. In connection with this monster trial by party checks and other political interventions against Slovak Matica, several workers had to leave it, even the Matica´s administrator Ján Marták. 1959 Due to the serious restriction of the freedom of the Slovak Matica in their homeland, in Buenos Aires, Argentina, they founded the Slovak Foreign Matica, chaired by Jozef Cíger Hronský. 1963 While the political situation is improving, Slovak Matica commemorated the centenary of its founding with grand celebrations. Slovak Matica was awarded the highest state award by the Council of the Republic, which was presented by the then important state and party representative Alexander Dubček. On August 4, the foundation stone of the third building of the Slovak Matica in Martin on Hostihor was laid. 1968 Political liberalization in society also brought hope to revive the original mission and activities of Slovak Matica, including the renewal of its membership base and the development of care for foreign Slovaks. This promising process lasted only a short time and was stopped on August 21 after the occupation of the Czechoslovak Republic by the soldiers of the Warsaw Pact and in the subsequent normalization process. For political reasons, during so called normalization, many employees had to leave Slovak Matica (Tomáš Winkler, Ivan Kadlečík, Pavol Hrúz, Jaroslav Rezník Sr. and others) and officials (Imrich Sedlák). 1973 On December 20, the Slovak National Council adopted the Act on the Slovak Matica, which partially returned it to the status of twenty years ago. The membership base was significantly limited, only a minority of local unions survived, and the activities of Slovak Matica once again focused primarily on librarianship, bibliography, biography, literary museology and archiving. From 1974 to 1990, during the era of socialist culture, the chairman of Slovak Matica was the chairman of the novelist, publicist and political figure Vladimír Mináč, who during this period has merits in the development of scientific activity in Slovak Matica. 1975 On August 30, a new,