sentences:  In 2002–03, Longerich was the third holder of the Visiting Chair at the Fritz Bauer Institute in Frankfurt.In 2003–04, he was J.B. and Maurice Shapiro Senior Scholar in Residence at the Centre for Advanced Holocaust Studies at the United States Holocaust Memorial Museum in Washington DC, where he worked on a biography of Heinrich Himmler.In 2005–06, he was a Fellow at the Wissenschaftszentrum Nordrhein-Westfalen.