https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14011201Edit ImageSaveSaveEditCropCustom TextFriedrich Heinrich Alexander von Humboldt. Stipple engraving by D. J. Pound, 1859, after C. Begas, 1840.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 2388 x 3492 px | 300 dpiFree DownloadFriedrich Heinrich Alexander von Humboldt. Stipple engraving by D. J. Pound, 1859, after C. Begas, 1840.More