Claim: Peter Erler, an American 18th century historian, only focused his research on American emigrants.
Evidence: Peter Erler (born 10 April 1961 in Weißenfels) is a German historian. The focus of his professional research is on the history of German emigrants in the Soviet Union, Soviet internment camps in Germany, together with political developments more generally in the Soviet occupation zone (1945–1949) and the German Democratic Republic (1949–1990).