WIA GC/1909/255
Warburg, Aby to Jauch, Carl 01/11/1909
gives opinion on a rare book sent to him by Jauch; Warburg informed him that Werner and Hildegard...
WIA GC/1911/405
Warburg, Aby to Jauch, Carl 17/09/1911
[Aby Warburg and Mary Warburg] are friends with his parents; this is the reason why Warburg wants...