WIA GC/12596 | Neumann, Carl to Warburg, Aby 11/02/1920 | he visited Mrs. [Anna] Blumenfeld-Warburg to get news of Warburg; talks about illness and health... |
WIA GC/13248 | Blumenfeld, Anna to Warburg, Aby 16/11/1921 | sends greetings although she did not write when he was appointed professor, when she heard Saxl's... |
WIA GC/14409 | Melchior, Elsa to Warburg, Aby 31/05/1923 | she enjoyed the Rembrandt lecture in the Bibliothek Warburg; sends birthday greetings; Anna... |
WIA GC/14412 | Blumenfeld, Anna to Warburg, Aby [Spring 1923] | she is exhausted after her return from South Germany; she told Mary and Dr. [Heinrich] Embden of... |
WIA GC/14434 | Warburg, Aby to Saxl, Fritz 15/05/1923 | orders books from the library; forbids him to hand the lecture text to anybody; even Cassirer is... |