WIA GC/11375 | Warburg, Aby to Kentenich, Gottfried 25/05/1911 | Joseph Hansen in Cologne gave his name to Warburg; Warburg researches Ramboux; does he know of... |
WIA GC/11389 | Warburg, Aby to Schmitz, Hermann 06/06/1911 | the attribution to Barthel Bruyn or his school is probably correct; advises him to have the... |
WIA GC/28281 | Hansen, Joseph to Warburg, Aby 24/05/1911 | he could not find the papers of the Ramboux estate; Hansen knows that Warburg has already written... |
WIA GC/28343 | Schnütgen, Alexander to Warburg, Aby 30/04/1911 | he has never heard anything about the literary estate of J. A. Ramboux; if such an estate existed... |
WIA GC/4035 | Warburg, Aby to Hansen, Joseph 01/05/1911 | inquires about the literary estate of J.A. Ramboux |