Correspondence between Saly Mayer and Maurice Marcus, Julius Orlov and the Red Cross organization, between Maurice Marcus and Charles Passman - the JDC Southeast Europe director, and between Julius Orlov and Maurice Marcus and others, 1943-1946 - Correspondence between Saly Mayer and Maurice Marcus, a merchant who was deported from Sofia to Lom, regarding the situation of the Jews who were deported from Sofia by the Bulgarian authorities; - Correspondence between Saly Mayer and Julius Orlov, an industrialist in Zurich who was Maurice Marcus' person of trust in Switzerland; - Correspondence between Julius Orlov and Maurice Marcus regarding JDC support for the establishment of a kitchen for the Jewish refugees in Lom; - Correspondence between Saly Mayer and the Red Cross organization regarding relief to the Jews in Bulgaria; - Documentation regarding the disagreements caused by the establishment of a JDC committee in Sofia; - Correspondence between Maurice Marcus and Charles Passman - the JDC Southeast Europe director, regarding the establishment of a JDC committee in Sofia, 1945.