https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14010257Edit ImageSaveSaveEditCropCustom TextJohn Wallis. Stipple engraving by R. Cooper, 1825, after W. Derby after Sir G. Kneller, 1701.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 797 x 1200 px | 300 dpiLarge JPEG 2244 x 3377 px | 300 dpiFree DownloadJohn Wallis. Stipple engraving by R. Cooper, 1825, after W. Derby after Sir G. Kneller, 1701.More