WIA GC/12666 | Warburg, Max to Warburg, Aby 02/11/1920 | on his work; he is going to attend a meeting in Berlin, accompanied by his daughter Lola Warburg... |
WIA GC/26345 | Warburg, Charlotte to Warburg, Aby and Warburg, Mary 14/10/1897 | shortly before their departure from Frankfurt they received the news that Frieda had a son... |
WIA GC/26346 | Warburg, Charlotte to Warburg, Aby and Warburg, Mary 20/10/1897 | thanks for their letter and sees that they are still in Nuremberg; uncle Moritz [Oppenheim] wrote... |
WIA GC/26392 | Warburg, Frieda to Warburg, Aby and Warburg, Mary 22/11/1897 | thanks Mary for her congratulations on the birth of her son [Frederick M. Warburg] ; Nina Warburg... |
WIA GC/26920 | Warburg, Charlotte to Warburg, Aby and Warburg, Mary 28/05/1898 | informs them that Olga Warburg got engaged to Paul Kohnspeyer [Paul Kohn-Speyer] the previous day... |