Under guard, Jewish men, women, and children board trains during deportation from Siedlce to the Treblinka extermination camp. Siedlce, Poland, August 1942. Photograph »

Jews from Przyrow are deported to the Treblinka extermination camp. Czestochowa, Poland, September-October 1942. Photograph »

Bulgarian authorities round up Jews in occupied Macedonia for deportation. They were first held in a camp in Skopje and then deported to the Treblinka extermination camp in German-occupied Poland. Yugoslavia, March 1943. Photograph »

Jews from Bulgarian-occupied Macedonia and Thrace during deportation. They were sent to the Danube River port of Lom and then to Treblinka in German-occupied Poland by way of Vienna. Skopje, Yugoslavia, March 11-31, 1943. Photograph »

Jews forced to board a train to the Danube River port of Lom, from where they were sent to the Treblinka extermination camp during the Bulgarian deportations from Macedonia and Thrace. Skopje, Yugoslavia, March 11-31, 1943. Photograph »

Scene during the deportation of Jews to Treblinka extermination camp. Lom, Bulgaria, March 1943. Photograph »

Train station near the Treblinka extermination camp. This photo was found in an album belonging to camp commandant Kurt Franz. Poland, 1942-1943. Photograph »

Franz Stangl, commandant of the Treblinka killing center. Stangl holds a horsewhip. Photograph »

Portrait of Franz Stangl, commandant of the Treblinka killing center (September 1942 - August 1943). Photograph »

Distant view of smoke from the Treblinka extermination camp, set on fire by prisoners during a revolt. This scene was photographed by a railway worker. Treblinka, Poland, August 2, 1943. Photograph »

Three participants in the Treblinka uprising who escaped and survived the war. Warsaw, Poland, 1945. Photograph »