WIA GC 1930/1341
Cassirer, Ernst to Lecturers of Hamburg University 05/06/1930
WIA GC 1930/1419
Cassirer, Ernst and Cassirer, Toni to Heimann, Adelheid [January 1930]
invitation to a social evening in the Uhlenhorster Fährhaus on 24/01/1930, programme enclosed...
WIA GC 1930/1420
Cassirer, Ernst to Heimann, Adelheid 31/07/1930
WIA GC 1930/1421
Cassirer, Ernst to Heimann, Adelheid 23/10/1930
certificate of permission to attend his seminar
WIA GC 1930/583
Cassirer, Ernst to Saxl, Fritz 24/01/1930