https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13968305Edit ImageSaveSaveEditCropCustom TextGeorge Combe lecturing on phrenology, portrayed with protuberances on his head. Coloured lithograph 1826.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 927 px | 300 dpiLarge JPEG 3125 x 2413 px | 300 dpiFree DownloadGeorge Combe lecturing on phrenology, portrayed with protuberances on his head. Coloured lithograph 1826.More