Sources for the History of Podlasie in the family Bartoszewicz’ Archive

This article is based on records, which are part of archival holdings State Archive in Lodz. Bartoszewicz’ family archive, stored in Lodz, contains a variety of thematically and chronologically different archival materials. Some part of them refers to history of Podlasie from the sixteenth to the early twentieth century. The collection of historical sources had been created by members of Bartoszewicz’ family, mainly by Adam (1792–1878), Julian (1821–1870) and Kazimierz (1852–1930). They were collectors and well-known publicists. Julian Bartoszewicz was also historian, who was one of the authorities in the field of history and historical sources in the mid-nineteenth century. The text also shows what kind of archival sources about Podlasie can be found there and why and in what ways these documents found in this archive