Biographieen Geisteskranker in ihrer psychologischen Entwickelung / Dargestellt von Karl Wilhelm Ideler. https://www.rawpixel.com/image/13997107/image-cartoon-face-personFree Image from public domain licenseBiographieen Geisteskranker in ihrer psychologischen Entwickelung / Dargestellt von Karl Wilhelm Ideler. https://www.rawpixel.com/image/14017377/image-cartoon-face-personFree Image from public domain license