WIA GC/11626 | Warburg, Aby to Sachse, Paul Friedrich Carl 19/08/1912 | informs him on the development re pictorial decoration of the steamship 'Imperator'; H. Olde has... |
WIA GC/11692 | Warburg, Aby to Bruck, Hermann 22/12/1912 | suggests that Bruck should ask J.D. Heymann to collect the painting if and when it is finished |
WIA GC/11839 | Warburg, Aby to Ballin, Albert 30/03/1913 | reports on paintings commissioned by Hamburg-Amerika Linie; has only good things to say about... |
WIA GC/11845 | Warburg, Aby to Ballin, Albert 07/04/1913 | Warburg has heard from his brother Max, that Ballin does not like the paintings by Jean Paul... |
WIA GC/11848 | Warburg, Aby to Ballin, Albert 10/07/1913 | thanks him for a letter; his services as artistic advisor to Hamburg-Amerika Linie would be... |