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:
Sir John Herschel with Cap by Julia Margaret Cameron. Sir John Herschel with Cap Subject is John Herschel English mathematician and scientist Albumen print mm Scanned from Colin Ford's Julia Margaret Cameron th Century Photographer of Genius ISBN creator Julia Margaret Cameron File Sir John Herschel with Cap by Julia Margaret