Prisoners at forced labor. Photo taken during an SS inspection. Dachau concentration camp, Germany, June 28, 1938. Photograph »

An SS guard supervises prisoner forced laborers in the forest near the Buchenwald concentration camp. Germany, probably 1937 or 1938. Photograph »

Prisoners of the Buchenwald concentration camp at forced labor. Germany, probably 1937 or 1938. Photograph »

Prisoners at forced labor build the Dove-Elbe canal. Neuengamme concentration camp, Germany, 1941-1942. Photograph »

Inmates at forced labor in the Ravensbrueck concentration camp. Germany, between 1940 and 1942. Photograph »

Returning from work in a stone quarry, forced laborers carry stones more than six miles to the Buchenwald concentration camp. Germany, date uncertain. Photograph »

Prisoners at forced labor in the Siemens factory. Auschwitz camp, Poland, 1940-1944. Photograph »

Forced labor in the quarry of the Mauthausen concentration camp. Austria, date uncertain. Photograph »

Forced labor in the quarry of the Mauthausen concentration camp. Austria, date uncertain. Photograph »

Forced laborers cut quarried stones outside the Buchenwald concentration camp. Germany, 1944. Photograph »