WIA GC/12248 | Warburg, Aby to Derenberg, Richard 15/08/1915 | on the commemorative print ['Gedenkblatt'] for the centenary of the birthday of his grandmother... |
WIA GC/12261 | Warburg, Aby to Derenberg, Richard 27/08/1915 | on the commemorative print 'Gedenkblatt an Frau Regine Oppenheim'; lists mistakes; requests... |
WIA GC/25118 | Warburg, Charlotte to Oppenheim, Regine [1870s?] | thanks her for two recipes for cakes; she is busy with her preparations for Pesach; they will... |
WIA GC/25219 | Warburg, Aby and Oppenheim Regine to Warburg, Charlotte 31/05/1887 | explains why he is in Frankfurt for his Pentecost break; he wanted to tour the Mosel region on... |
WIA GC/25264 | Warburg, Aby to Oppenheim, Nathan Marcus and Oppenheim, Regine 14/12/1887 | acknowledges receipt of Max Warburg's letter with the invitation by the grandparents to stay with... |