Jewish Historical Institute in Warsaw, Holocaust Survivor Testimonies (coll. 301), Marta Klein Testimony (301/12). Original in Polish.
Testimony of Marta Klein on the actions against Jews in Vilnius and Białystok and deportations to Treblinka, her escape en route to the camp, her rescue by a Pole, Czuliński, and the arrest of her son and his protector after their betrayal.
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.
