"Hermann Perl was a former executive of the metal ore firm Lippmann Bloch in Breslau (today Wrocław), who had immigrated to London, England in the late 1930s."@en . . . "See also collection 599a ('Herman Perl: correspondence and papers') and eyewitness account 1656/2/2/21."@en . . "WL3000/9/1/1081" . . . "Correspondence with Perl, Hermann"@en . "Correspondence regarding birthday wishes for Perl, B’nai B’rith business, the sending of source material, and a request for support of a biographical project on Fritz Haber."@en . . . . "10 letters"@en . . "This material has been digitised. Readers should book a reading room terminal to access it."@en .