Sea turtle, Cheloniidae (1596–1610) by Anselmus Boëtius de Boodt. Original from the Rijksmuseum. Digitally… Free Image from public domain license 
Crested Porcupine, Hystrix cristata (1596–1610) by Anselmus Boëtius de Boodt. Original from the Rijksmuseum.… Free Image from public domain license 
Cast - Iron Architecture (1894, a collection of iron made architectural designs, notably the Eiffel Tower. Digitally enhanced… Free Image from public domain license 
Lithograph Saturne printed in 1877, by F. Meheux, an antique representation of the planet saturn. Digitally enhanced from our… Free Image from public domain license 
Vintage llustration of skull published in 1843 by John Lloyd Stephens (1805-1852). Original from New York public library.… Free Image from public domain license 