https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13994579Edit ImageSaveSaveEditCropCustom TextA man in drag with the expression of being deep in thought. Photograph, 189-.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 844 x 1200 px | 300 dpiLarge JPEG 2460 x 3500 px | 300 dpiBest Quality JPEG 5451 x 7754 px | 300 dpiFree DownloadA man in drag with the expression of being deep in thought. Photograph, 189-.More