WIA GC 1930/697 | Bing, Gertrud to Davidsohn, Robert 22/12/1930 | |
WIA GC 1930/698 | Davidsohn, Robert to Bing, Gertrud 26/12/1930 | |
WIA GC 1931/484 | Bing, Gertrud to Davidsohn, Robert 19/01/1931 | |
WIA GC 1933/530 | Bing, Gertrud to Davidsohn, Robert 30/05/1933 | |
WIA GC 1933/531 | Davidsohn, Robert to Bing, Gertrud 08/06/1933 | |