WIA GC/1903/107 | Embden, Käthe et al. to Warburg, Aby 12/06/1903 | poem; birthday greetings |
WIA GC/1904/125 | Embden, Heinrich and Embden, Gertrud to Warburg, Aby and Warburg, Mary 13/04/1904 | regret that [Aby Warburg and Mary Warburg] are absent from Hamburg |
WIA GC/1905/134 | [Embden, Gertrud?] to Warburg, Aby 12/06/1905 | greetings |
WIA GC/1909/250 | Huch, Friedrich to Warburg, Aby 22/04/1909 | thanks Warburg for his friendly words about his book; he met James Loeb and is grateful for... |
WIA GC/1912/261 | Warburg, Aby to Embden, Gertrud 14/05/1912 | thanks her for sending him the pamphlet for her book on playing cards; he ordered a copy from... |