WIA FC/1906/12/9 | Warburg, Alice to Warburg, Mary 19/03/1906 | Detta [Marietta Warburg] is fine, she did not have whooping cough; Max Adolph and Frede will... |
WIA FC/1907/6/12 | Warburg, Charlotte to Warburg, Aby 01/12/1907 | forwards review of works by the painter [Fritz] Friedrichs [not extant] |
WIA GC/1905/177 | Friedrichs, Fritz to Warburg, Aby 07/07/1905 | declines to give a recommendation for Rudolf Guba but suggests a meeting of all those interested... |
WIA GC/1905/178 | Warburg, Aby to Friedrichs, Fritz 09/07/1905 | thanks him for his opinion of Mr. Guba, which did not surprise him; he will nevertheless try to... |
WIA GC/1905/207 | Warburg, Aby to Guba, Rudolf 09/07/1905 | after having received Mr. [Fritz] Friedrichs opinion, he cannot promise a study grant for the... |