https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13972326Edit ImageSaveSaveEditCropCustom TextAlexander Tschirch. Photograph after a plaque by Hugo Siegwart.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 787 x 1200 px | 300 dpiLarge JPEG 2244 x 3420 px | 300 dpiFree DownloadAlexander Tschirch. Photograph after a plaque by Hugo Siegwart.More