https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13981629Edit ImageSaveSaveEditCropCustom TextGerardus Johann Mulder. Line engraving by D. J. Sluyter, 1854, after B. de Porter.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 850 x 1200 px | 300 dpiLarge JPEG 1146 x 1618 px | 300 dpiFree DownloadGerardus Johann Mulder. Line engraving by D. J. Sluyter, 1854, after B. de Porter.More