Painting in the Cygnaeus Gallery, Helsinki, Finland. Artwork is in the public domain because the artist died more than 70 years ago. Photography was permitted in the museum without restriction. [Erik Johan Löfgren / Own work -- Public domain -- http://commons.wikimedia.org/wiki/File:Knut Felix von Willebrand by Erik Johan Löfgren, c. 1871 - Cygnaeus Gallery - Helsinki - DSC05654.JPG]