Human Skeleton, Lateral View (in Crouching Posture; finished study for an unpublished table) by George Stubbs https://www.rawpixel.com/image/9368469/image-art-watercolors-vintageFree Image from public domain licenseA Burial Party, Cold Harbor, Virginia by John Reekie and Alexander Gardner https://www.rawpixel.com/image/14325840/burial-party-cold-harbor-virginia-john-reekie-and-alexander-gardnerFree Image from public domain license