A traditional portrait of a flock of beautiful Japanese red crown crane by Ogata Korin (1658-1716). Digitally enhanced from… Free Image from public domain license 
Date palm (Phoenix dactylifera) from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… Free Image from public domain license 
A lithograph of Cocos Weddelliana from the book, L'Illustration Horticole: Revue Mensuelle Des Serres et Des Jardins (1875)… Free Image from public domain license 
Polypodium Karwinskianum from Ferns: British and Exotic (1856-1860) by Edward Joseph Lowe. Original from Biodiversity… Free Image from public domain license 
New York City, photographed from two miles up in the air (1922) from The Lionel Pincus and Princess Firyal Map Division.… Free Image from public domain license