The Thirty-Six Star Flag of the United States of America by an unknown artist. Original from Library of Congress. Digitally… Free Image from public domain license 
The Great Bartholdi Statue, Liberty Enlightening the World, published by Currier & Ives. Original from Library of Congress.… Free Image from public domain license 
The Great Bartholdi Statue, Liberty Enlightening the World, published by Currier & Ives. Original from Library of Congress.… Free Image from public domain license 
Kanazawa Oki Nami Ura by Katsushika Hokusai (1760-1849) a traditional Japanese Ukyio-e style illustration of extreme waves… Free Image from public domain license 
Tree stump and plant stem from La Botanique de J. J. Rousseau by Pierre-Joseph Redouté (1759–1840). Original… Free Image from public domain license 
Small Red Blossoms on a Vine by Katsushika Hokusai published between 1830 and 1850, an illustration of small red blossoms on… Free Image from public domain license 
