Disabled people and the euthanasia programme poster

This modern photograph shows Hartheim castle in Austria, which became a hospital for the physically and mentally disabled in 1898. It was converted into a T4 killing centre in early 1940 when gas chambers were fitted. After T4 ended in 1941, it was used to murder weakened concentration camp inmates until 1944. Approximately 30,000 people were murdered, including Theresia Karas, whose story is retold in the accompanying postcard.