WIA GC/10445
Warburg, Aby to Silvy, H. 30/09/1906
thanks him for supplying him with a very good photograph of the niello; it helped him to find the...
WIA GC/2397
Silvy, H. to Warburg, Aby 28/09/1906
forwards a photograph of a niello belonging to Baron Edmond de Rothschild