WIA GC/1897/62 | Warburg, Aby to Rothschild, Baron Edmond de 16/05/1897 | thanks him for permission to view his art treasures |
WIA GC/1906/678 | Silvy, H. to Warburg, Aby 28/09/1906 | forwards a photograph of a niello belonging to Baron Edmond de Rothschild |
WIA GC/1906/679 | 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/1908/429 | Warburg, Aby to Rothschild, Edmond de 03/08/1908 | thanks him for a copy of Rothschild's commemorative speech on [Henri] Bouchot |
WIA GC/1911/623 | Picot, Emile to Warburg, Aby 04/08/1911 | thanks him for a copy of Warburg's article [Hausbuchmeister]; congratulates him, accepts his... |