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Th e article characterizes the most valuable sources relating to the four German forced labour camps for Jewish population, operating in 1942-1945 in the occupied Częstochowa. Th ese camps belonged to the German armament concern Hasag which manufactured the grenades and munition, primarily exploiting slave labour of women. With regard to the history of the Hasag camps the article describes the content of the archives of the Institute of National Remembrance, the Jewish Historical Institute, and the Yad Vashem Institute. Th e author presents also the main problems encountered by the researchers of the less-known parts of the Holcaust history such as the forced labour Hasag camps.