WIA FC/1923/17/11 | Warburg, Max to Bing, Gertrud 14/03/1923 | returns a letter by E.A. Seemann, Leipzig; originally, Max Warburg promised Heise, Lübeck, to... |
WIA GC/1902/27 | Warburg, Aby to Bode, Wilhelm 17/03/1902 | replies to a query on coat-of-arms; does not think they are Florentine; he does not have the book... |