WIA FC/1908/3/36 | Warburg, Aby to Warburg, Mary 06/07/1908 | the previous evening he spent with [Gustaf F.] Steffen at Kösterberg; with Max [Warburg] were... |
WIA FC/1908/3/38 | Warburg, Aby to Warburg, Mary 08/07/1908 | to love the Mary Hertz of 1888 to 1897 does not mean the opposite in later years; Mary has made... |
WIA FC/1908/3/50 | Warburg, Aby to Warburg, Mary 14/07/1908 | is annoyed that the children had a cold; mentions the med. Doctor in Nordby; does not allow her... |
WIA GC/1905/38 | Bonfort, Helene to Warburg, Aby 19/01/1905 | Warburg might possibly be approached by Heinrich Spiero from Berlin, who wants to establish an... |
WIA GC/1905/565 | Spiero, Heinrich to Warburg, Aby 19/01/1905 | wants to discuss with Warburg a project, the founding a society of the arts |