WIA GC/11242 | Warburg, Aby to Eckardt, Felix von 09/06/1910 | returns the letter by [Ludwig] Leiser, forwarded by Müller-Rastatt on the request of von Eckardt... |
WIA GC/11248 | Warburg, Aby to Leiser, Ludwig 10/06/1910 | on the dispute regarding respective areas of responsibility in the hierarchy of the 'Hamburgische... |
WIA GC/3805 | Leiser, Ludwig to Warburg, Aby 14/06/1910 | thanks him for Warburg's support in the matter of letters to the editor of the 'Hamburgischer... |
WIA GC/3831 | Müller-Rastatt, Carl to Warburg, Aby 06/06/1910 | on the [Ludwig] Leiser affair; he apologizes for one impolite passage, but cannot excuse Leiser's... |