https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13996713Edit ImageSaveSaveEditCropCustom TextFriedrich Heinrich Alexander von Humboldt. Line engraving by P. Wurster after C. Begas, 1840.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 797 x 1200 px | 300 dpiLarge JPEG 1245 x 1875 px | 300 dpiFree DownloadFriedrich Heinrich Alexander von Humboldt. Line engraving by P. Wurster after C. Begas, 1840.More