WIA FC/1921/3/6 | Derenberg, Louise to Warburg, Aby 30/12/1921 | thanks him for a letter; she attended the lecture by Adolph Goldschmidt in the KBW the previous... |
WIA FC/1923/2/1 | Derenberg, Louise to Warburg, Aby 02/04/1923 | thanks him for birthday wishes to her husband Julius and herself; tells him of a performance in... |
WIA GC 1930/3553 | Warburg, Anna to Saxl, Fritz 01/02/1930 | |
WIA GC 1930/3587 | Saxl, Fritz to Warburg, Anna 23/04/1930 | |
WIA GC 1933/3241 | Bing, Gertrud to Warburg, Anna 25/10/1933 | |