WIA FC/1891/13/11 | Warburg, Max to Warburg, Paul [?] 26/11/1891 | he is taking English lessons from a young man living in his house; the previous day he paid a... |
WIA FC/1901/13/14 | Warburg, Paul to Warburg, Aby and Warburg, Mary 09/06/1901 | sends congratulation on the engagement [of Louise Warburg to Julius Derenberg] |
WIA FC/1901/4/4 | Kohn-Speyer, Olga to Warburg, Aby 11/06/1901 | sends birthday greetings; congratulates him on Louise's engagement; wants to know what Warburg... |
WIA FC/1901/4/5 | Kohn-Speyer, Olga to Warburg, Mary 05/09/1901 | thanks her for letter, is always touched by Mary's warm feelings; Nina wrote that the [Louise... |
WIA FC/1901/7/39 | Warburg, Charlotte to Warburg, Aby 14/12/1901 | is sorry that Warburg's publishers [Seemann] make him wait for such a long time; it is a pity... |