https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13992821Edit ImageSaveSaveEditCropCustom TextMedical students observing an operation on a lantern screen via a projecting periscope located above the operating table. Halftone after H.W. Koekkoek, 1909.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 925 x 1200 px | 300 dpiLarge JPEG 2327 x 3020 px | 300 dpiFree DownloadMedical students observing an operation on a lantern screen via a projecting periscope located above the operating table. Halftone after H.W. Koekkoek, 1909.More