WIA GC 1930/3668
Bing, Gertrud to Warburg, Max 04/09/1930
forwards the transcript of a letter by Eisler [extant, WIA, GC Eisler, Robert to Bing, Gertrud 02...
WIA GC 1930/815
Eisler, Robert to Saxl, Fritz [May 1930]
WIA GC 1930/816
WIA GC 1930/817
Eisler, Robert to KBW [1930]
WIA GC 1930/818
Eisler, Robert to Saxl, Fritz [30/07/1930]