United States Holocaust Memorial Museum Collection Source of acquisition the Bundesarchiv, Berlin, Germany; Record Group, Sub-collection ZC, compiled by the former East German Security Service "Stas"). The documents were part of the East German archival system, then they were transferred to the Bundesarchiv. Records are of mixed provenance. The United States Holocaust Memorial Museum received the filmed collection via the United States Holocaust Memorial Museum International Archival Programs Division in 2005, 2006, 2009, 2011, 2012, 2013, 2016, Aug. 2018, and Aug. 2019. The entire collection was digitized in 2014.