WIA GC/11282 | 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... |
WIA GC/30974 | Gesellschaft der Freunde der Vereinigten Staaten in Hamburg, invitation 08/03/1929 | invitation to attend the first meeting of the society; [Albrecht] Mendelssohn Bartholdy will give... |
WIA GC/3713 | 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/3743 | 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/3744 | Warburg, Aby to Hübbe, Andreas 22/11/1910 | thanks him for the copy of the appeal; in order to know how much money to pledge he wants to know... |