WIA GC/28576 | Gräff, Walter to Warburg, Aby 25/02/1913 | approaches him with a research query; the Alte Pinakothek has purchased a portrait of the Sacrati... |
WIA GC/28577 | Gräff, Walter to Warburg, Aby 11/03/1913 | thanks Warburg for his fast reply; returns the family tree of the Sacrati family; Gräff has... |
WIA GC/28578 | Gräff, Walter to Warburg, Aby 14/03/1913 | supplies bibliographical reference on [Cosmé] Tura; mentions Count Giacomo Sacrati and his... |
WIA GC/4010 | Gräff, Walter to Warburg, Aby 24/01/1911 | requests a short note for the catalogue on the school of Fra Filippo re coat-of-arms of Jacques... |
WIA GC/5162 | Warburg, Aby to Gräff, Walter 09/06/1913 | thanks him for the Baldassare article; on identifying a painting in Dublin, National Gallery... |