Jürgen Matthäus is a historian and was Director of the Applied Research branch at the Jack, Joseph and Morton Mandel Center for Advanced Holocaust Studies of the US Holocaust Memorial Museum from 2004 to 2005. He is the author or (co-)editor of more than twenty books, including, as co-editor with Martin Cüppers and Anne Lepper, From "Euthanasia" to Sobibor: An SS Officer's Photo Collection (2022).