https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13971851Edit ImageSaveSaveEditCropCustom TextOld oak tree (Quercus species) in Windsor Forest. Charcoal drawing by G. B. (or B. G.), 1852.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 814 px | 300 dpiLarge JPEG 3307 x 2243 px | 300 dpiFree DownloadOld oak tree (Quercus species) in Windsor Forest. Charcoal drawing by G. B. (or B. G.), 1852.More