WIA FC/1887/8/18 | Warburg, Aby and Warburg, Moritz to Warburg, Charlotte 11/05/1887 | Warburg thanks his mother for a letter; he is well; he has 27 lecture hours per week including... |
WIA FC/1887/8/40 | Warburg, Aby to Warburg, Charlotte 17/11/1887 | is sorry to read that uncle Max [Rosenbacher] has to spend a few more weeks in Frankfurt; asks... |
WIA FC/1888/13/1 | Warburg, Aby [list of his friends] [1888] | a list of names of Warburg's friends and spoof etymologies of names: H. Nippen: president of... |
WIA FC/1888/6/6 | Warburg, Aby to Warburg, Charlotte 24/02/1888 | thanks her for letter and money advanced; he would like to attend the festivities in Hamburg... |
WIA GC/1887/10 | Ruben, Paul to Warburg, Aby 15/10/1887 | mentions Ernst Levy, Wilhelm Kiesselbach, John [Johann Nicolaus] Hertz, Johannes [Hans] Nippen... |