https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13973960Edit ImageSaveSaveEditCropCustom TextA seated man drawing a view onto a framed piece of glass and a seated man drawing from a perspective grid. Etching.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 730 x 1200 px | 300 dpiLarge JPEG 2022 x 3323 px | 300 dpiFree DownloadA seated man drawing a view onto a framed piece of glass and a seated man drawing from a perspective grid. Etching.More