"The Mass Extermination of Jews in German Occupied Poland". It is a brochure published by the Polish government-in-exile in 1943 to disseminate the text of Edward Bernard Raczyński's Note of 10 December 1942. It was the first official information to the Western general public about the Holocaust in German-occupied Poland. Soft cover. Published in London in English.The brochure contained reports and documents about the Holocaust in Poland. The most important item was Raczyński's Note, sent on 10 December 1942 to the foreign ministers of the 26 government signatories of the Declaration by United Nations.  Based on intelligence from the Home Army's Jewish Affairs Bureau, Raczyński described the Germans' initial shooting executions and subsequent lethal gassings of Polish Jews. It was known that Jews deported from the Warsaw Ghetto in Grossaktion Warsaw were taken to Treblinka, Bełżec, and Sobibor, which the Polish underground state correctly described as "extermination camps". Raczyński said that one-third of the three million Polish Jews had already been killed: 173  – actually, an underestimate.The brochure was published in 1943 and contained also the text of the Joint Declaration by Members of the United Nations of 17 December 1942, and an excerpt of a statement by Deputy Prime Minister Stanisław Mikołajczyk of 27 November 1942. Publication's purpose was to draw attention to the Final Solution and deter the Germans from pursuing it further