WIA GC 1930/3120
Steinmann, Ernst to KBW 16/06/1930
WIA GC 1930/3121
Bing, Gertrud to Steinmann, Ernst 26/06/1930
WIA GC 1930/3122
Steinmann, Ernst to Bing, Gertrud 27/06/1930
WIA GC 1930/3123
KBW to Steinmann, Ernst 28/06/1930
WIA GC 1930/3124
Bing, Gertrud to Steinmann, Ernst 19/09/1930