d from Oorlogsschip een schot lossend (1759) by Cornelis Ploos van Amstel. Original from The Rijksmuseum. Digitally enhanced… Free Image from public domain license 
Connecticut River. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally enhanced… Free Image from public domain license 
The X-band radar array is installed on the solid rocket booster retrieval ship Liberty before launch of Space Shuttle… Free Image from public domain license 
Little Paulina, Christmas in Russia (1906) by Anna Robinson and Mary Cowden Clarke. Original from Library of Congress.… Free Image from public domain license 
The space shuttle Endeavour is seen on launch pad 39a at Kennedy Space Center in Cape Canaveral, Fla, Thursday, April 28… Free Image from public domain license 
Worker from Un-Natural History Not Taught In Bored Schools, etc published by Simpkin, Marshall & Co. (1883). Original from… Free Image from public domain license 
Eddystone lighthouse from All Among The Lighthouses, Or The Cruise Of The Goldenrod published by D. Lothrop & Co. (1886).… Free Image from public domain license