WIA FC/1902/9/47 | Warburg, Aby to Warburg, Mary 01/07/1902 | he might return to Hamburg next day although he will suffer from hayfever again; wants to know... |
WIA FC/1907/5/10 | Warburg, Aby to Warburg, Mary 02/04/1907 | is pleased that Detta [Marietta Warburg] is well again; asks Mary to send him visiting cards; he... |
WIA GC/1902/18 | Baerwald, Richard and Baerwald, Olli to Warburg, Aby 31/12/1902 | New Year Greetings |
WIA GC/1905/4 | Baerwald, Olli to Warburg, Aby and Warburg, Mary 02/03/1905 | thanks them for their expression of condolence on the death of her mother; wishes to meet them |
WIA GC/1907/8 | Baerwald, Olli and Baerwald, Richard to Warburg, Aby and Warburg, Mary 30/12/1907 | New Year greetings; they plan to spend the next hayfever season in Norway |