https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13991424Edit ImageSaveSaveEditCropCustom TextSir William George Armstrong. Process print after Lock & Whitfield.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 853 x 1200 px | 300 dpiLarge JPEG 2243 x 3154 px | 300 dpiFree DownloadSir William George Armstrong. Process print after Lock & Whitfield.More