https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13998359Edit ImageSaveSaveEditCropCustom TextCharles Aston Key. Stipple engraving by F. Holl, 1851, after G. Richmond.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 849 x 1200 px | 300 dpiLarge JPEG 2233 x 3156 px | 300 dpiFree DownloadCharles Aston Key. Stipple engraving by F. Holl, 1851, after G. Richmond.More