https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13972607Edit ImageSaveSaveEditCropCustom TextCarl Ferdinand von Graefe. Line engraving by G. Metzeroth after himself.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 821 x 1200 px | 300 dpiLarge JPEG 2212 x 3232 px | 300 dpiFree DownloadCarl Ferdinand von Graefe. Line engraving by G. Metzeroth after himself.More