The Polish Source Institute (PIŹ) in Lund in southern Sweden collected over 500 testimonies from Polish survivors in Sweden. The study analyses the work of the archive’s founder Zygmunt Łakociński and examines what role the Holocaust played in this documentation project. The author shows that the Polish national experience was the focal point of this collection. However, the institute also created a small Jewish section for interviews with Polish-Jewish survivors in Sweden. As the Jewish witnesses describe, Jewish life in Poland before the war was, despite widely spread antisemitism, strongly flourishing, and Polish-Jewish relations were deeply entangled. The complexity of these relations makes it impossible to view Polish history of war-suffering without considering the war-suffering of Polish Jews.