https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13987116Edit ImageSaveSaveEditCropCustom TextGeorge Birkbeck. Stipple engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 770 x 1200 px | 300 dpiLarge JPEG 1328 x 2070 px | 300 dpiFree DownloadGeorge Birkbeck. Stipple engraving.More