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 Trompel'oeil Collection Gugelmann GSGUGEABERLI.tif Information Trompel'oeil Trompel'oeil Umrissradierung koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEABERLI helveticarchives ch aspx ID helveticarchives ch Swiss National Library Prints and Drawings Department Uploaded