On April 23-24, 2021 in Vitebsk (Belarus) the VI International scientific-practical conference “Actual problems of source study” will be held. SPbIH of the RAS is one of its organizers (together with Vitebsk State University named after P.M. Masherov, State Archives of Vitebsk Region, Belarusian State University, Republican Institute of Higher Education, Kharkiv National University named after V.N.Karazin). Submission of applications and texts of the report is possible until March 20.