WIA FC/1914/10/4 | Warburg, Max to Warburg, Aby 15/01/1914 | forwards Max Warburg's letter to B. Schädel, 06/01/1914, and copy of Max Warburg's reply to L... |
WIA GC/1909/516 | Warburg, Aby to Schultz, Clemens 28/02/1909 | invites Schultz to give a lecture to the group of twelve married couples which makes up a private... |
WIA GC/1909/517 | Schultz, Clemens to Warburg, Aby 02/03/1909 | fixing a date for a lecture |
WIA GC/1909/518 | Schultz, Clemens to Warburg, Aby 12/03/1909 | requests another date for his lecture |
WIA GC/1909/519 | Schultz, Clemens to Warburg, Aby 23/03/1909 | requests yet another date for his lecture |