https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14009754Edit ImageSaveSaveEditCropCustom TextFriedrich Heinrich Alexander von Humboldt. Lithograph by Ducarme after Baron C. von Steuben, 1815.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 902 x 1200 px | 300 dpiLarge JPEG 1502 x 1998 px | 300 dpiFree DownloadFriedrich Heinrich Alexander von Humboldt. Lithograph by Ducarme after Baron C. von Steuben, 1815.More