Straus, Otto, Mannheim, Germany, to Herrn Berthold Rosenthal, Mannheim, Germany. 8 August 1939. In German. One typewritten page. This letter describes various enclosures listed below. They are pages of "a small file on the Straus family of Otterberg, prepared by Berthold Rosenthal in 1939 for Otto Straus of Mannheim."