This image was acquired from
flickr. 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:
naraarcid national archives nationalarchives sketch drawing text cartoon writing monochrome Original Caption Patent Drawing for Muzzle for Pigs Created By Department of Commerce. Patent Office. From Series Patented Case Files compiled Production Date Persistent URL arcweb.archives.gov Repository Textual Archives Services