The original records are located in record groups 126, 128, 129, 130, 131, 132, 133, 134,135, 136, 139, and 140 in the archives of the Main Commission for the Investigation of German Crimes in Poland (Główna Komisja Badania Zbrodni Niemieckich w Polsce) at the Instytut Pamięci Narodowej (Institute of National Memory) in Warsaw, Poland. The United States Holocaust Memorial Museum selected specific folders from these record groups for filming.