WIA GC/1897/50 | Mackowsky, Hans to Warburg, Aby 23/09/1897 | on the illness of his sister; on the Botticelli research |
WIA GC/1897/51 | Mackowsky, Hans to Warburg, Aby 03/12/1897 | mentions national museum Bargello in Florence, mentions a head of a child, as executed by the... |
WIA GC/1898/69 | Weisbach, Werner to Warburg, Aby 21/11/1898 | he still has the photograph of the cassone; could Warburg order a print from Fratelli Alinari for... |
WIA GC/1899/71 | Weisbach, Werner to Warburg, Aby 09/11/1899 | asks him whether he could have two objects photographed, one for Hans Mackowsky and one for... |
WIA GC/1900/56 | Mackowsky, Hans to Warburg, Aby [1900] | thanks him for photographs of the little daughter; tells him of the plan to bring his sister to... |