Sidney Plains with the Union of the Susquehanna and Unadilla Rivers by Jasper Francis Cropsey https://www.rawpixel.com/image/11932585/image-cows-plant-artFree Image from public domain licenseAnatomy, physiology and hygiene (1890), vintage ear illustration. Original public domain image from Wikimedia Commons. … https://www.rawpixel.com/image/11065724/image-face-paper-artFree Image from public domain licenseView of Duurstede Castle at Wijk bij Duurstede by Jan van Goyen https://www.rawpixel.com/image/14264438/view-duurstede-castle-wijk-bij-duurstede-jan-van-goyenFree Image from public domain licenseAn Old Man in Military Costume by Rembrandt Harmensz van Rijn https://www.rawpixel.com/image/14264088/old-man-military-costume-rembrandt-harmensz-van-rijnFree Image from public domain licenseVintage ear, medical illustration. Remixed by rawpixel. https://www.rawpixel.com/image/11340138/image-face-art-vintageView licenseTables of analysis in the moist way, and by the blowpipe, together with the chemical symbols and equivalents / [Edward… https://www.rawpixel.com/image/13991019/image-background-paper-patternFree Image from public domain license