ENDr. Bohdan Zawadzki (*1902–†1966) is one of the famous Polish psychologists. He left a significant mark on the history of the University of Stephanus Bathoreus in Vilnius. He was assistant professor in the Psychology Institute of the University from 1935 to 1939. His documents collection includes interwar period materials from his studies and work in Warsaw, Berlin, Vienna, and the U.S.A. (from 1928 to 1934). It also contains papers and correspondence from his Vilnius period.