WIA FC/1912/1/1 | Derenberg, Julius to Warburg, Aby 30/01/1912 | congratulates him on his title; on the various professional options for Warburg, Halle, Breslau |
WIA FC/1912/1/2 | Derenberg, Julius to Warburg, Aby 03/04/1912 | a detailed account of mother's illness |
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/1921/3/4 | Derenberg, Julius to Warburg, Aby 27/06/1921 | Saxl forwarded the Luther book; finds it very interesting, a service to scholarship, a new way of... |
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... |