September 5-7, 2018, Associate Professor of the Department of Historiography, Source Studies, and Archeology Ye.S.Rachkov took part in the International Conference "Archiwa w państwach totalitarnych Europy Środkowej i Wschodniej" (Lublin, Sandomierz). The organizers of the Conference were Institute of History of Maria Curie-Skłodowska University (Lublin), Institute of National Remembrance in Warsaw, State Archives in Lublin, Sandomierz and Sandomierz Regional Museum (Sandomierz).