https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13961554Edit ImageSaveSaveEditCropCustom TextFriedrich Heinrich Alexander von Humboldt (1769-1859). Oil painting after Samuel Friedländer.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1072 x 1200 px | 300 dpiLarge JPEG 2652 x 2970 px | 300 dpiFree DownloadFriedrich Heinrich Alexander von Humboldt (1769-1859). Oil painting after Samuel Friedländer.More