https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13989088Edit ImageSaveSaveEditCropCustom TextNicholas Joseph, Freiherr von Jacquin, and his brother Joseph Franz. Line engraving by Mathieu, 1802, after a wax medallion by L. Posch.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 803 x 1200 px | 300 dpiLarge JPEG 2200 x 3287 px | 300 dpiFree DownloadNicholas Joseph, Freiherr von Jacquin, and his brother Joseph Franz. Line engraving by Mathieu, 1802, after a wax medallion by L. Posch.More