https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13976234Edit ImageSaveSaveEditCropCustom TextLt. Col. Alfred William Alcock. Photograph.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 870 x 1200 px | 300 dpiLarge JPEG 2255 x 3109 px | 300 dpiFree DownloadLt. Col. Alfred William Alcock. Photograph.More