https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13964573Edit ImageSaveSaveEditCropCustom TextThe semi-centennial of anaesthesia : October 16, 1846, October 16, 1896.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 783 px | 300 dpiLarge JPEG 1698 x 1108 px | 300 dpiFree DownloadThe semi-centennial of anaesthesia : October 16, 1846, October 16, 1896.More