From January to May, 1942, 55,000 out of 160,000 Jews from Lodz were sent to their deaths in Chelmno death camp. From September 1942 until May 1944 there were no more deportations. After May, the deportations to Chelmno were renewed. In early August, the Nazis rerouted the deportations to Auschwitz. By August 30, 1944 about 70,000 Jews from Lodz had been sent to Auschwitz.
Yad Vashem Photo Archives 35BO3