https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13955893Edit ImageSaveSaveEditCropCustom TextFour sketches of skulls. Watercolour, 1817.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 929 px | 300 dpiLarge JPEG 3312 x 2564 px | 300 dpiFree DownloadFour sketches of skulls. Watercolour, 1817.More