Beautiful photomechanical prints of Lotus Flowers (1887–1897) by Ogawa Kazumasa. Original from The Rijksmuseum.… Free Image from public domain license 
Skull of a cow (1816) by Jean Bernard (1775-1883). Original from the Rijks Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Skull of a cow (1816) by Jean Bernard (1775-1883). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Human Monkey and Ape skulls from Volledige Natuurlijke Historie der Zoogdieren(1845) by schinz de Visser. Digitally enhanced… Free Image from public domain license 
Russell's Sting Ray (Trygon Russellii) from Illustrations of Indian Zoology (1830-1834) by John Edward Gray (1800-1875).… Free Image from public domain license 
