Yad Vashem Archives, The Central Historical Commission of the Central Committee of Liberated Jews in the U.S. Zone (M.1.E), file no. 3540377. Original in Yiddish.
Testimony of Sonia Jaffe regarding the murder of the laborers at the Kailis factory near the Vilna Ghetto in Ponary, 1944.
JHI, 301, Relacja Karola Tajgmana (301/5) Original in Yiddish.
Testimony of Karol Tajgman regarding the liquidation action in the Warsaw Ghetto and his deportation to the Treblinka extermination camp, from which he escaped during the revolt.