The 4th issue of the Officina Historiae journal (the journal of the Students' Scientific Society of Historians of the Siedlce University of Natural Sciences and Humanities) has been published, whose editor-in-chief is Anna Kłoś, MA, and the language editor is Anita Smyk, MA. An article by doctoral student Damian Fiołek (MA) on The activity of Julia Brystygier in state security organs against the Catholic Church in 1950-1956 was published in this issue.