WIA GC/1906/52 | Bock, Helene to Warburg, Aby 18/11/1906 | thanks him for his interest; her work for Warburg is going well; Paul, her husband is not well... |
WIA GC/1908/43 | Bock, Helene to Warburg, Aby 01/06/1908 | thanks him in her own name and the name of Paul [name of husband and son] for information which... |
WIA GC/1917/64 | Bock, Helene to Warburg, Aby 14/11/1917 | thanks him for a lecture which she and her friend Mrs. Dräger enjoyed very much |
WIA GC/1920/16 | Bock, Helene to Warburg, Mary 16/01/1920 | wants to know how she is; how were Max Adolph's holidays?; she was in Hamburg on 31/12/1919 but... |
WIA GC/1920/17 | Bock, Helene to Warburg, Mary 12/10/1920 | sends her birthday greetings; thanks her for her lovely disposition, gentle nature, Mary made the... |