WIA GC/1910/290 | Hübbe, Andreas to Warburg, Aby 18/10/1910 | he invites Warburg to sign a petition; he is collecting money to publish books in the Friesian... |
WIA GC/1910/291 | Hübbe, Andreas to Warburg, Aby 21/10/1910 | thanks him for his letter and takes up Warburg's suggestion to approach Professor Otto Lauffer... |
WIA GC/1910/292 | Hübbe, Andreas to Warburg, Aby 23/10/1910 | list of who donated how much money; G. Thilenius, Kurt Siemers, Otto Blohm [art collector], G... |
WIA GC/1910/293 | Hübbe, Andreas to Warburg, Aby 28/10/1910 | thanks Warburg for the donation of the Warburg bank; so far Mark 2.500 have been collected |
WIA GC/1910/294 | Warburg, Aby to Hübbe, Andreas 12/11/1910 | thanks him for a copy of the appeal; he will not sign it, but he will show it to his brother... |