WIA GC/1905/394 | Merck, Ernest to Warburg, Aby 09/09/1905 | thanks him information supplied; invitation to tea |
WIA GC/1905/395 | Merck, Ernest William to Warburg, Aby 16/12/1905 | congratulates him on the attribution of a painting to Johann Georg Trautmann |
WIA GC/1907/528 | Merck, Ernest to Warburg, Aby 21/03/1907 | he promises to write to Ch.[azal Ocala, Louis R.] and will request a photograph of the J.G... |
WIA GC/1907/529 | Merck, Ernest to Warburg, Aby 18/07/1907 | forwards three photographs, sent by Chazal, of the J.G. Trautmann paintings; apologizes for the... |
WIA GC/1908/374 | Merck, Ernest to Warburg, Aby 02/09/1908 | forwards sketches after nature by the son of an American friend; he wants to become an... |