P.42 - Jan Karski Collection Jan Karski, an emissary of the Polish underground in Paris and London, submitted important reports regarding the murder of the Jews of Poland to the representatives of the Polish government-in-exile in London in 1942. Along with other documentation, these reports served as the basis for a joint statement by the Allies which was made on 17 December 1942. Jan Karski remained in the west until the end of the war and worked to persuade the government heads and the public leaders to act in order to rescue the Jews of Poland from extermination. After the war Jan Karski gathered official documentation, private documentation and journals regarding the period of the occupation of Poland, the Polish underground, activities of the Polish government-in- exile and Polish and Jewish organizations in the Diaspora. This Collection and the personal documentation belonging to Jan Karski were transferred to the Hoover Institute in Stanford, California. The documentation in the Collection: Correspondence, memos, government documentation, bulletins, reports, research, texts of speeches, printed matter, photographs, newspapers and newspaper clippings, journals and microfilm regarding the events and the living conditions in occupied Poland during World War II, the German occupation and the Soviet occupation, the attitude towards the Jews and activities of the Polish underground.