WIA GC/1915/269 | Warburg, Aby to Gulbrandson, Olaf Leonhard 18/08/1915 | sends him an idea for a cartoon for 'Simplicissimus'; 'Britannia rules the slaves'; he does not... |
WIA GC/1915/271 | Warburg, Aby to Gulbrandson, Olaf Leonhard 29/08/1915 | re cartoon 'Britannia rules the slaves'; supplies a suggestion for an illustration, fat Britannia... |
WIA GC/1915/548 | Simplicissimus to Warburg, Aby 08/10/1915 | convey Mr. [Olaf Leonhard Gulbrandson's], styled Gulbransson's thanks. |
WIA GC/1917/316 | Warburg, Aby to Heine, Thomas Theodor 06/02/1917 | supplies a caption for a cartoon 'Fata Morgana. Zur Illustration der idealen und sehr realen... |
WIA GC/1917/728 | Warburg, Aby to Slevogt, Max 23/04/1917 | supplies an idea for an illustration; Simplicissimus is not enough, Ludwig Thoma is somewhat... |