https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13997233Edit ImageSaveSaveEditCropCustom TextBritish inventors, politicians and military men: a key to the identities of the sitters. Engraving by C.G. Lewis, 1863, after T.J. Barker.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 832 px | 300 dpiLarge JPEG 3192 x 2212 px | 300 dpiFree DownloadBritish inventors, politicians and military men: a key to the identities of the sitters. Engraving by C.G. Lewis, 1863, after T.J. Barker.More