WIA FC/1921/3/2 | Derenberg, Louise to Warburg, Aby 18/03/1921 | congratulates him on his daughters; Detta [Marietta Warburg] has passed her exams, Miss Henckel... |
WIA FC/1921/3/3 | Derenberg, Julius to Warburg, Aby 20/03/1921 | congratulates him on the final exams of Marietta and Frede; his own son Carl and his nephew... |
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/1922/8/549 | Warburg, Aby to Warburg, Mary 15/10/1922 | the reaction to the visit of his family has set in; feels very lonely; it might have been a... |
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... |