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Katyn Massacre

Documents about the Katyn Massacre include investigations made by the U.S. government, protests the Soviet government made about memorialization plans in the U.K., Soviet rejections of responsibility, and later moves for internal investigations and memorialization. (Photo: “Aerial view of the exhumation site with rows of Polish officers’ bodies laid on the ground by the mass graves,” April 30, 1943, Imperial War Museum, © IWM (HU 106211))