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:
EulerLeonhard. Artwork Creator Jakob Emanuel Handmann Portrait of male Technique pastel paper Kunstmuseum Basel kunstmuseumbasel ch service ExternalInterface module collection objectId viewType detailView Kunstmuseum Basel credit line ProvenanceEvent Rudolf BischoffMerian la painted by Emanuel Handmann accession number Inv dcs