Yad Vashem Archives, The Central Historical Commission of the Central Committee of Liberated Jews in the U.S. Zone (M.1.E), file no. 3540561. Original in Yiddish.
Testimony of Binyamin Orenshtein regarding five singers in the HASAG-Pelcery camp in Czestochowa.
Yad Vashem Archives, The Central Historical Commission of the Central Committee of Liberated Jews in the U.S. Zone (M.1.E), file no. 3540579. Original in Yiddish.
Testimony of Yeoshua Steinfeld regarding the murder of three children from the HASAG factory in Kielce on the banks of the Vistula River, March 1943.