https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13993266Edit ImageSaveSaveEditCropCustom TextJohn Wallis. Stipple engraving by R. Cooper, 1825, after Derby after Sir G. Kneller, 1701.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 795 x 1200 px | 300 dpiLarge JPEG 2244 x 3389 px | 300 dpiFree DownloadJohn Wallis. Stipple engraving by R. Cooper, 1825, after Derby after Sir G. Kneller, 1701.More