Testimony of Dawid Lew, regarding his experiences in Ciechanowiec, Bransk, in hiding, in Czyzew, Zambrow and other places Occupation of Ciechanowiec by the German Army; establishment of two ghettos; term of office of Wolf Kagan as Judenrat Chairman; employment of Jews at various crafts jobs including welding, carpentry and shoemaking; deportation of Jews from Czyzew and Zarembi-Koshchelne to the ghettos in Ciechanowiec; "Aktion"; murder of approximately 700 Jews; arrests of Jews; deportation of the Ciechanowiec Jews to Treblinka; escape to Bransk; "Aktions" in the nearby villages including Bielsk Podlaski, Mazowieckie, Wysokie and Czyzewo; hidden by a farmer; betrayal of the Jews he was hiding to the Germans by the farmer; deportation to Czyzew; deportation to Zambrow; approximately 17,000 inmates in the camp; appointment of representatives of the villages from which the Jews were deported to the camp as Judenrat members; liquidation of the camp; transfer of the Jews to Treblinka; escape to the Bialystok Ghetto.