An écorché showing the blood vessels, heart and kidneys: front and back views. Coloured line engraving by J. Pass, 1796. https://www.rawpixel.com/image/13956812/image-heart-cartoon-personFree Image from public domain licenseThe circulatory system: dissection of the torso showing the kidneys and bladder, with the arteries indicated in red.… https://www.rawpixel.com/image/13963521/image-cartoon-person-artFree Image from public domain licenseFowke & Aston's improved diuretic balls : for swelled legs, grease, cracked heels, gravel, and affections of the kidneys… https://www.rawpixel.com/image/14020840/image-paper-book-eyesFree Image from public domain licenseThe circulatory system: diagrams showing the kidneys and sacrum, with the arteries and veins indicated in red and blue.… https://www.rawpixel.com/image/13971725/image-paper-cartoon-personFree Image from public domain licenseThe circulatory system: dissection of the torso showing the kidneys and bladder, with the arteries and veins indicated in… https://www.rawpixel.com/image/13974903/image-person-art-public-domainFree Image from public domain licenseThe circulatory system: diagrams showing the heart, kidneys and pelvic bones, with the arteries and veins indicated in red… https://www.rawpixel.com/image/14001278/image-paper-heart-cartoonFree Image from public domain license