https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13955501Edit ImageSaveSaveEditCropCustom TextFour men standing by the huge trunk of an Australian mountain ash tree (Eucalyptus species). Wood engraving, c. 1867.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 821 x 1200 px | 300 dpiLarge JPEG 2200 x 3216 px | 300 dpiFree DownloadFour men standing by the huge trunk of an Australian mountain ash tree (Eucalyptus species). Wood engraving, c. 1867.More