WIA FC/1900/7/7 | Warburg, Moritz to Warburg, Aby and Warburg, Mary 31/01/1900 | thanks them for their letter; calls Marietta 'their blue sky' at home; admonishes Warburg to... |
WIA FC/1910/4/36 | Warburg, Mary to Warburg, Aby 15/04/1910 | thanks him for his first letter from Bologna; is very pleased for him that his research is going... |
WIA FC/1910/4/51 | Warburg, Aby to Warburg, Mary 22/04/1910 | encloses his letter [of reference for E. Eitner] to [Paul] Wohlwill [22/04/1910]; he has little... |
WIA GC/1907/776 | Wohlwill, Paul to Warburg, Aby 18/01/1907 | Emil Wohlwill has been in Hummelsbüttel for three weeks; greetings from Goslar |
WIA GC/1909/261 | Warburg, Aby to Junker, Heinrich 20/04/1909 | forwards two corrections in the membership list, Gustav Schiefler and Wohlwill [Paul Wohlwill ?] |