The nightmare from Un-Natural History Not Taught In Bored Schools, etc published by Simpkin, Marshall & Co. (1883). Original… https://www.rawpixel.com/image/571833/crab-nightmare-vintage-artworkFree Image from public domain licenseCrab nightmare drawing https://www.rawpixel.com/image/571557/crab-nightmare-vintage-artworkView licensePNG Crab nightmare drawing, transparent background https://www.rawpixel.com/image/572021/png-crab-nightmare-drawing-transparent-backgroundView license