WIA GC/18492 | du Bois-Reymond, Marie to Warburg, Aby 24/05/1927 | she had wanted to tell them of Thilenius' visit, but he has postponed it twice; she is angry as... |
WIA GC/18493 | Warburg, Aby to du Bois-Reymond, Marie 30/05/1927 | thanks her for the article by her husband [Claude du Bois-Reymond]; he will try to remind... |