Sidney Hall’s (1831) astronomical chart illustration of the Monoceros, Canis Minor and the Atelier Typographique.… Free Image from public domain license 
Aurora Borealis in High Latitudes from the book William MacKenzie’s National Encyclopedia (1891), a colored… Free Image from public domain license 
Hippocampus and fish, Fantasy animals (1596–1610) by Anselmus Boëtius de Boodt. Original from the Rijksmuseum.… Free Image from public domain license 
Sidney Hall’s (?-1831) astronomical chart illustration of the Scorpio. Original from Library of Congress. Digitally… Free Image from public domain license 
A woman holding lamp with flame from Aladdin's Lamp by Joaquin Miller's poem published by L. Prang & Co. Original from the… Free Image from public domain license 
The Wing (1893) by Odilon Redon. Original from the National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
A lithograph, Planetensystem, printed in 1898, an antique representation of a planetary system. Digitally enhanced from our… Free Image from public domain license