https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13955746Edit ImageSaveSaveEditCropCustom TextWilhelm Conrad Roentgen . Oil painting.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1037 x 1200 px | 300 dpiLarge JPEG 2730 x 3158 px | 300 dpiFree DownloadWilhelm Conrad Roentgen . Oil painting.More