WIA GC/27638 | Warburg, Felix to Warburg, Aby 08/04/1902 | thanks him for a copy of Warburg's article ['Bildniskunst']; in San Francisco people were asking... |
WIA GC/9595 | Grunsfeld, Jessie N. to Warburg, Aby 06/11/1896 | thanks him for a beautiful [wedding] present, a lamp which has pride of place in their parlour... |
WIA GC/9693 | Steinhart, May F. to Warburg, Aby 17/03/1896 | she cannot accept Warburg's dinner invitation due to Mr. Steinhart's indisposition |
WIA GC/9694 | Steinhart, Ignatz and Steinhart, May F. to Warburg, Aby 05/03/1896 | dinner invitation |