http://www.emuseum.ch/view/objects/asitem/Objects$004033678/45;jsessionid=2529B3B13FF0B6E8E814F520D8055F34?criteria=Hans$0020Finsler$0020&rg=Exhibitions,,0&sm=%5BObjects,%20Exhibitions,%20Sites,%20People,%20MediaModule%5D

http://sammlungen-archive.zhdk.ch/view/objects/asitem/Objects$004033821/52;jsessionid=151363B6B58C9DCA337AD79DB91898A6