WIA GC/1914/237 | Warburg, Aby to Embden, [Marianne?] 24/06/1914 | on her recommendation for Alfred Wolf, who needs assistance; Warburg mentioned the Hamburg... |
WIA GC/1922/111 | Embden, Käthe to Warburg, Aby 10/01/1922 | New Year greetings; Gustav spent Christmas with them, Marianne [Embden, her sister] and Gertrud... |
WIA GC/1924/356 | Embden, Käthe to Warburg, Aby 06/01/1924 | thanks him for a book which Warburg sent her via Heinrich [Embden]; she enjoyed the Christmas... |
WIA GC/1929/707 | Embden, Heinrich to Warburg, Aby 08/01/1929 | thanks him for New Year greetings and good wishes and the gift of glasses on the occasion of the... |