https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14015868Edit 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 902 px | 300 dpiLarge JPEG 1602 x 1204 px | 300 dpiFree DownloadGeorge Combe lecturing on phrenology, portrayed with protuberances on his head. Coloured lithograph 1826.More