WIA FC/1889/5/2 | Jahns, Franziska to Warburg, Aby 18/10/1889 | she has found his opera glass and will forward it to Strasbourg; Paul Warburg is busily packing... |
WIA GC/1892/53 | Warburg, Aby to Vischer, Robert 23/03/1892 | draft letter to accompany a copy of his book on Botticelli which he hopes will convince him... |