https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13978847Edit ImageSaveSaveEditCropCustom TextRobert Koch. Lithograph, 1891.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 829 x 1200 px | 300 dpiLarge JPEG 2419 x 3500 px | 300 dpiBest Quality JPEG 2742 x 3968 px | 300 dpiFree DownloadRobert Koch. Lithograph, 1891.More