WIA FC/1922/1/1 | Derenberg, Louise to Warburg, Aby 18/03/1922 | thanks him for birthday greetings to her and her husband's, Julius, birthdays; the family had... |
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 FC/1926/2/1 | Derenberg, Louise; Derenberg, Julius; Derenberg, Walter and Derenberg, Carl Julius to Warburg... | Louise sends birthday greetings; is sure that the new library building and events like Cassirer's... |
WIA GC/1923/306 | Melchior, Elsa to Warburg, Aby 04/04/1923 | thanks him for an Easter card; she and Ruth [daughter?] like it very much; Ruth is four and a... |