WIA FC/1897/11/157 | Warburg, Aby to Hertz, Mary 20/08/1897 | how does she like his new monogram?; the previous evening, Warburg, Paul Ruben, A. von der Osten... |
WIA FC/1897/27/61 | Warburg, Aby to Warburg, Charlotte 16/08/1897 | Warburg spends the first Sunday in England with Richard [Rosenbacher] in the country; [Paul] Kohn... |
WIA FC/1902/9/4 | Warburg, Aby to Warburg, Mary 16/02/1902 | he has found book titles in Fr. v. Lipperheide's publications; he visited [F.] Sarre, Otto... |
WIA FC/1909/4/2 | Warburg, Felix to Warburg, Aby and Warburg, Mary 10/12/1909 | thanks Mary for her letter; hopes that everybody is well; agrees with suggestions about support... |
WIA GC/1904/287 | Schwedeler-Meyer, Ernst to Warburg, Aby [1904] | he thanks him for receiving the latest proofs and finds that the essay is getting clearer; on... |