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) (IPN) Warsaw, Poland, Sygn. 309. Records created by the Provincial Court in Lublin during the trials conducted from 1945 to 1960. The court proceedings later became a part of the court’s archives. Records were transferred to the IPN and eventually became a part of the Sygn. 309.The United States Holocaust Memorial Museum Archives received the filmed collection via the United States Holocaust Museum International Archives Project in July 2013.