WIA GC/14664 | Binswanger, Hertha to Warburg, Aby [after 21/04/1923] | thanks him very much for the lecture which was 'wonderful, interesting' |
WIA GC/15682 | Binswanger, Ludwig to Warburg, Aby 14/08/1925 | thanks him for a letter, a brochure, chocolates; Warburg is well and truly discharged; on... |
WIA GC/15683 | Binswanger, Hertha to Warburg, Aby [before 17/09/1925] | apologizes for not having written for a long time; her husband is very busy, hopes to have a... |
WIA GC/15684 | Binswanger, Hertha to Warburg, Aby 17/09/1925 | she was too busy to send her previous letter; on the comings and goings of members of her family... |
WIA GC/15687 | Warburg, Aby to Binswanger, Hertha and Binswanger, Ludwig 23/12/1925 | thanks her for her letter; on his professional work, the building of the library, 'laboratorium... |