WIA GC/1902/136 | Embden, Käthe to Warburg, Aby [1902] | forwards a letter by Grietje Jolles on the death of Henkie [Hendrik] Jolles, Tilli's [Mathilde's... |
WIA GC/1902/214 | Jolles, Grietje to Embden, Käthe 28/07/1902 | on the death of Henkie, the little boy of André and Tilli [Mathilde] Jolles, who died of... |
WIA GC/1903/107 | Embden, Käthe et al. to Warburg, Aby 12/06/1903 | poem; birthday greetings |
WIA GC/1907/175 | Embden, Käthe to Warburg, Aby 12/06/1907 | birthday greetings |
WIA GC/1916/706 | Voll, Martha to Warburg, Aby 10/12/1916 | mentions Käthe [Embden]; approaches Warburg to donate money for wounded soldiers |