. "This material has been digitised. Readers should book a reading room terminal to access it."@en . "Comprising letters by The Wiener Library exclusively, the correspondence deals with Heilmann’s involvement in the Library’s eyewitness testimony project."@en . "4 letters"@en . . "Magdalena Heilmann (born Müller) was the widow of Jewish-German centre-left politician Ernst Heilmann who had been murdered in Buchenwald concentration camp in 1940."@en . . . . "WL3000/9/1/575" . "For information about the eyewitness testimony project and access to the compiled reports see the Eyewitness Testimony Collection."@en . . . . . . "Correspondence with Heilmann, Magdalena"@en . .