https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13996192Edit ImageSaveSaveEditCropCustom TextRobert Rainey Pennington. Mezzotint by W. Walker, 1849, after F. R. Say.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 940 x 1200 px | 300 dpiLarge JPEG 2338 x 2985 px | 300 dpiFree DownloadRobert Rainey Pennington. Mezzotint by W. Walker, 1849, after F. R. Say.More