The article discusses the development of studies on the epoch of the Polish‑Saxon Union (1697– 1763) in the 20th century (until 1990). Particular attention has been paid to the works of Władysław Konopczyński and his students (including Józef Feldman, Emanuel Rostworowski, Jerzy Michalski, Józef Andrzej Gierowski), as well as Mieczysław Skibiński and Jacek Stas-zewski. An attempt was made to identify the conditions influencing academic interest in the Saxon era, the gradual changes in research topics and their effects, and the varying intensity of this research. It was emphasised that they were largely concerned with political history.