EN
The aim of this study is to present the first ten years of secret cooperation between male religious congregations in Poland and Czechoslovakia, initiated after the political “thaw” in 1956. This phase ended with the establishment of direct contacts between Polish hierarchs and Slovak ecclesiastical emigration during the Second Vatican Council, which, in turn, opened up new prospects for cooperation. As all communication, contacts and support given were usually held in deep conspiracy, it is difficult to find written sources on the matter, and witnesses are usually deceased. Therefore, the main source of information are documents produced by the communist security apparatus (investigations into individual orders or prosecutions of arrested monks). They are supplemented by written accounts and memoirs. Considering the state of preserved sources, I focus here on a few of the most active congregations in this regard: the Redemptorists, Capuchins, Jesuits, Society of the Divine Word.