View of the wall surrounding the cemetery of the Hadamar Institute. Jagged pieces of glass were placed on the wall to discourage observers. This photograph was taken by an American military photographer soon after the liberation of Hadamar. Germany, April 5, 1945. Photograph »

An American soldier stands guard in front of the Hadamar Institute. The photograph was taken by an American military photographer soon after the liberation. Germany, April 5, 1945. Photograph »

View of the Hadamar Institute. This photograph was taken by an American military photographer soon after the liberation. Germany, April 7, 1945. Photograph »

View of one of the mass graves at the Hadamar Institute. This photograph was taken by an American military photographer soon after the liberation. Germany, April 5, 1945. Photograph »

A US Army soldier views the cemetery at the Hadamar Institute, where victims of the Nazi euthanasia program were buried in mass graves. This photograph was taken by an American military photographer soon after the liberation. Germany, April 5, 1945. Photograph »

Exterior view of the Hadamar main building. The photograph was taken by an American military photographer soon after the liberation. Germany, April 7, 1945. Photograph »