This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
CHNB Medelsertal vom Fuss des Lukmanierpasses Collection Gugelmann GSGUGEBLEULERa.tif Information Creator Johann Ludwig Bleuler Creator Johann Hrlimann Medelsertal vom Fuss des Lukmanierpasses Medelsertal Aquatinta CHNB Medelsertal vom Fuss des Lukmanierpasses Collection Gugelmann GSGUGEBLEULERb tif after Swiss National Library