https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13984115Edit ImageSaveSaveEditCropCustom TextHeinrich Wilhelm Matthias Olbers. Stipple engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 731 x 1200 px | 300 dpiLarge JPEG 2133 x 3500 px | 300 dpiBest Quality JPEG 2200 x 3610 px | 300 dpiFree DownloadHeinrich Wilhelm Matthias Olbers. Stipple engraving.More