The Council to Aid Jews (RPŻ) was established, in occupied Warsaw, on 4th December 1942, continuing the mission of the Provisional Committee for Aid to Jews, which had been formed a few months earlier. Its members and collaborators – both Poles and Jews – representing various political parties, operated underground under the codename “Żegota”. At one of its first meetings, the Presidium of the RPŻ decided to expand its coordinating activities by creating district councils in other centres of occupied Poland. By this time, the Zamość-Lublin Committee for Assisting Jews was already active. Founded by Stefan Sendłak in the summer of 1942, it became an extension of “Żegota”. Attempts to establish branch offices led to the creation, in the spring of 1943, of two branch offices of the RPŻ – in Kraków and Lwów.