WIA GC/1587 | Federer-Köster, Anna to Warburg, Aby | thanks him for his invitations but sends apologies |
WIA GC/31262 | Schrader, Hermann; Federer-Köster, Anna; Blumenthal, Paul and Classen Walther F. [re constitution... | inform the paying members of a planned change in the constitution; paragraph 2 should specify... |
WIA GC/31641 | Warburg, Mary to Warburg, Aby 06/06/1905 | on Frede, who had spinach for the first time and liked it; on the meeting of the... |
WIA GC/715 | Köster, Anna to Warburg, Aby 19/06/1902 | on an exhibition, prepared by architect Johannes Oltmanns; problems with hanging |