https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13988963Edit ImageSaveSaveEditCropCustom TextG. Stanley Hall. Photogravure by Synnberg Photo-gravure Co., 1898.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 815 x 1200 px | 300 dpiLarge JPEG 1164 x 1714 px | 300 dpiFree DownloadG. Stanley Hall. Photogravure by Synnberg Photo-gravure Co., 1898.More