Golden Pheasant in the Snow (ca. 1900) illustration by Ito Jakuchu. Original from The MET Museum. Digitally enhanced by… Free Image from public domain license 
Illustrations from the book European Butterflies and Moths by William Forsell Kirby (1882), a kaleidoscope of fluttering… Free Image from public domain license 
The Equatorial Jungle (1909) by Henri Rousseau. Original from The National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Monkeys and Parrot in the Virgin Forest (Singes et perroquet dans la forêt vierge) (ca. 1905–1906) by Henri… Free Image from public domain license 
Balsamroot (Balsamorhiza sagittata) (1923) by Mary Vaux Walcott. Original from The Smithsonian. Digitally enhanced by… Free Image from public domain license