Source of acquisition is the Instytut Pamięci Narodowej-Komisja Ścigania Zbrodni przeciwko Narodowi Polskiemu (Institute of National Remembrance-Commission for the Prosecution of Crimes against the Polish Nation). Institut für Deutsche Ostarbeit created the records from ca. 1942 to ca. 1944; Sygn. 113. The United States Holocaust Research Institute Archives received filmed collection in 1991.