WIA FC/1911/11/6 | Warburg, Aby to M. M. Warburg & Co. 19/12/1911 | instruction to pay invoices for Glogowski & Co in Hamburg, Eduard Ritter in Hamburg, Amsler... |
WIA GC/1908/35 | Warburg, Aby to Berthaud Frères 30/01/1908 | he agrees with their conditions for photographing 15 miniatures in original size, two sets, one... |
WIA GC/1908/36 | Warburg, Aby to Berthaud Frères 02/02/1908 | he agrees with the prices quoted by the photographers |
WIA GC/1908/37 | Warburg, Aby to Berthaud Frères 03/02/1908 | orders photographs from codex 6803, Les Métamorphoses d'Ovide |
WIA GC/1908/38 | Warburg, Aby to Berthaud Frères 02/03/1908 | acknowledges receipt of 14 photographs; requests the negatives as he had paid for them by postal... |