![](https://www.historynet.com/wp-content/uploads/2021/09/prinzhorn-collection-Franz-Karl-Buhler-self-portrait.jpg)
(© Prinzhorn Collection, University Hospital Heidelberg, Inv. No. 3018)
(© Prinzhorn Collection, University Hospital Heidelberg, Inv. No. 3018)
(© Prinzhorn Collection, University Hospital Heidelberg, Inv. No. 3018)
(© Prinzhorn Collection, University Hospital Heidelberg, Inv. No. 3018)